CROONER John Mayer has defended Britney Spears for lip syncing in Australia.

The Gravity singer — who is also in Australia promoting his latest album — blasted fans who had called for a refund after the Womanizer star’s show in Perth after she sparked outrage by not singing live for her whole performance.

“If you’re shocked that Britney was lip-syncing at her concert and want your money back, life may continue to be hard for you,” Mayer wrote on his Twitter account.

Britney, 27, was said to have hid in her hotel room on Saturday following her performance on Friday night.

A representative for the star said, “Britney is aware of all this and she’s extremely upset by it.”

In response to the show fans protested about the high ticket prices and “impersonal” nature of the show.

Concertgoer Wendy Di Renzo, 36, said, “It was so impersonal. She did not interact with her audience. There were no big TV screens projecting the action, so if you didn’t know Britney, you might have even doubted it was her.”

Complaints against the Gimme More singer also included that she never referred to Perth by name, instead giving a generic welcome to fans, saying: “What’s up Australia?”

Another fan, who left the show early, said, “I want my money back or I want her to sing properly. The ticket cost me $200 and she lip-synced the whole thing.”

Politicians in three Australian states — Western Australia, Victoria and New South Wales — have now called for new laws to force music promoters to disclose whether a concert will be live or lip-synced beforehand.

Britney will next perform in Melbourne on November 11.

BRITNEY Spears has already started her Christmas shopping.

The Toxic singer — who’s currently in Australia for her Circus world tour — says she’s been splashing the cash on Collins Street in Melbourne.

“Went shopping on Collins Street yesterday and got a lot of my Christmas presents,” the 27-year-old wrote on her Twitter page Tuesday. “Melbourne is beautiful. Can’t wait to see more. Britney.”

Meanwhile, Spears has reportedly spoken to her parents Jamie and Lynne Spears about marrying her latest boyfriend: her agent, Jason Trawick.

“Britney told Jamie and Lynne she wants to marry Jason,” a source told America’s Life & Style magazine.

“Her parents weren’t shocked. They’re worried Britney is confusing close friendship with romance.”

BRITNEY Spears has told her parents she wants to marry her latest boyfriend: her agent, Jason Trawick.

The singer — who has been married twice before and has two young sons with ex-husband Kevin Federline — apparently spoke to her mother Lynne and father Jamie about tying the knot before she jetted off to Mexico in October with Jason and the boys.

“Britney told Jamie and Lynne she wants to marry Jason,” a source told America’s Life & Style magazine.

“Her parents weren’t shocked. They’re worried Britney is confusing close friendship with romance.”

ShowbizSpy reported last month how Britney, 27, was keen to make her relationship with Jason official.

“Britney and Jason have really hit it off,” a source said at the time. “Britney is saying how this is the first ‘proper’ relationship she has ever had. They actually talk about real stuff and he’s genuinely interested in what she has to say.

“He’s so sharp and intelligent and Britney feels their relationship is so much deeper than any one she has had before. She really feels like Jason is the kind of man who might tempt her to marry again.”

Meanwhile, it has been claimed that Spears was left shocked after hearing news Federline had gotten his girlfriend pregnant.

“Britney never wanted Kevin to have another child unless it was with her,” a source told American tabloid the National Enquirer.

“She desperately wants to have a baby girl, and she had hoped Kevin would be the dad.”

BRITNEY Spears is “extremely upset” after it was claimed concertgoers walked out of her show in Perth, Australia, because they were disgruntled with her lip-syncing.

The Toxic hitmaker has been heavily criticized for miming at her concerts, with the New South Wales state government using Spears as an example to promote a new lip-sync warning system on tickets and promotions of concerts.

Australian media reported that fans walked out of the first of Spears’ 14 Australian performances on Friday after just a few songs, describing it as “boring,” “stiff,” mimed and lacking interaction with the audience.

“Britney is aware of all this and she’s extremely upset by it,” Paul Dainty, Spears’ tour promoter, told The Australian newspaper on Monday.

“She’s a human being. I’m embarrassed, with such a big international entourage here with Britney, to be part of the Australian media when I see that kind of totally inaccurate reporting.”

Dainty said it was well known that part of Spears’ concert was lip-synced and blasted any inference that this was hidden.

“It’s been all over the internet for nine months,” Dainty said. ‘The inference is that we tried to hide this. It’s been the opposite.”

“This show is about an incredible spectacle, which it is,” he said.

BRITNEY Spears has been left shocked by the revelation her ex-husband Kevin Federline has gotten his girlfriend pregnant.

The singer — who has two kids with the former dancer — was apparently desperate to have a daughter with Federline, and is furious he’s about to become a dad again.

“Britney never wanted Kevin to have another child unless it was with her,” a source told American tabloid the National Enquirer.

“She desperately wants to have a baby girl, and she had hoped Kevin would be the dad.”

Pro volleyball player Victoria Prince said she found out in mid-October that she’s expecting K-Fed’s fifth child. He already has four children — daughter Kori, 7, and son Kaleb, 5, with former flame Shar Jackson, and sons Sean, 4, and Jayden, 3, with Britney.

“The test was positive. She told Kevin that she was pregnant, but he didn’t seem happy to hear the news,” the source revealed.

“Kevin wasn’t planning to have children with Victoria, and now he’s upset with her. Kevin says he loves her, but he told her that he didn’t want to get married again.

“Even though Britney has tried to move on, she still has feelings for Kevin. The last thing she wants is Kevin having children with someone else.”

BRITNEY Spears is reportedly planning to marry boyfriend Jason Trawick.

The Toxic hitmaker — who has been married twice before and has two kids with ex-husband Kevin Federline — has told pals she wants to make her relationship with Jason official.

“Britney and Jason have really hit it off,” a source said. “Britney is saying how this is the first ‘proper’ relationship she has ever had. They actually talk about real stuff and he’s genuinely interested in what she has to say.

“He’s so sharp and intelligent and Britney feels their relationship is so much deeper than any one she has had before. She really feels like Jason is the kind of man who might tempt her to marry again.”

Meanwhile, Jason has reportedly been playing dad to Britney’s two young sons, Sean and Jayden.

The boys apparently splashed around in the pool with Jason during a recent trip with their mom to Mexico.

“Jason was great with the kids and you can tell Britney really trusts him,” an eyewitness recently told Us Weekly magazine. “He would pick up Jayden if he wanted to be held, immediately calming the boy down.”

“He is absolutely fantastic with the boys,” added a Trawick pal. “When you see him with them, you wouldn’t think for a moment that he wasn’t their dad. He treats the kids like they are his own.

“[Jason] seems ready to take on the responsibility of a single mom with two kids.”

BRITNEY Spears‘ boyfriend Jason Trawick has been playing dad to the singer’s two young sons, Sean and Jayden.

The boys apparently splashed around in the pool with Jason during a recent trip with their mom to Mexico.

“Jason was great with the kids and you can tell Britney really trusts him,” an eyewitness told Us Weekly magazine. “He would pick up Jayden if he wanted to be held, immediately calming the boy down.”

“He is absolutely fantastic with the boys,” added a Trawick pal. “When you see him with them, you wouldn’t think for a moment that he wasn’t their dad. He treats the kids like they are his own.

“[Jason] seems ready to take on the responsibility of a single mom with two kids.”

Britney’s mom, Lynne, is also a fan of her daughter’s new man.

“Lynne said, ‘He’s the kind of man you would dream of your daughter marrying. The kids love him, and he’s stable,’” a source said earlier this week.

“Britney has been honest with Jason about what she’s been through in a way that I don’t think she’s been with other people, and he always preferred to not sugarcoat the harsh reality of what happened to her,” the source adds. “He tells her when she should take responsibility for her own actions.”

BRITNEY Spears feels “completely out of it” because her father is so controlling, it has been claimed.

Friends say the 3 singer is so strictly guarded by dad Jamie Spears she has lost track of the time and days of the week.

“She is so out of it she just doesn’t care anymore. She just does what she’s told and is totally in her world,” a source told Fox News.

“She’ll even call people at all hours of night for a general conversation and acts like it’s the middle of the day or something.”

Jamie — who took charge of Britney’s personal and financial affairs after her emotional breakdown in January 2008 — is so determined to keep his daughter under control he is reportedly systematically firing her staff so she doesn’t have the chance to get close to anyone.

“He’s really trying to clean up her image,” the source added. “He’s making a lot of changes to the people around her. Everyone is a bit on edge they could be the next one to be replaced.

“Britney’s family has seen what happens when she gets too close to outsiders and they lose control, they don’t want it happening again.”

Jamie blames Britney’s relationship with former manager Sam Lutfi and paparazzo Adnan Ghalib for his daughter’s breakdown.

He has taken out restraining orders against both men.

BRITNEY Spears‘ boyfriend Jason Trawick has got the big thumbs up from the singer’s mom!

Lynne Spears is apparently keen for her superstar daughter to marry Jason — who’s also her agent.

“Lynne said, ‘He’s the kind of man you would dream of your daughter marrying. The kids love him, and he’s stable,’” a source close to the star told Us Weekly magazine.

Trawick, 37, stood by Spears, 27, when she was at her lowest.

“Mostly everyone else abandoned her, but Jason refused to be completely cut out of Britney’s life,” says a source. “He’s very protective of her.”

“She has been honest with Jason about what she’s been through in a way that I don’t think she’s been with other people, and he always preferred to not sugarcoat the harsh reality of what happened to her,” the source adds. “He tells her when she should take responsibility for her own actions.”

Britney Spears‘ love life is back on track — she has reportedly rekindled her romance with agent Jason Trawick.

The pair — who split in August after dating for five months — were seen getting cozy at a California mall earlier this month.

“They’ve been spending a lot of time together,” a source told American tabloid the National Enquirer magazine. “Britney missed Jason so much when they were apart.

“They barely spoke. Now he’s planning to join her on her Australian tour next month.”

Britney’s father Jamie apparently played a large part in getting the pair back together.

“Jamie was really worried about Britney,” the source said. “She had all this free time on her hands during her tour break, and she was lonely. When Jason heard this, he came running. He really cares about Britney and doesn’t want to see her hurt.”

However, Jason still doesn’t feel ready to settle down and has told Britney he wants to date other people.

“He let her know he doesn’t want to be super-serious,” the insider said. “Yes they’re dating, but it’s not exclusive. Britney’s not happy about that, but she’ll take what she can get.”