Jen Spends $ To Keep Mayer, Efforts In Vain?

Pssst...Jen, get some Frownies! They really work and they're only $20! (Even cheaper if you get them from Drugstore.com.)

Jennifer Aniston has been spending $20,000-a-month on beauty treatments since she started dating John Mayer, a new report claims.

According to The National Enquirer magazine, the former 'Friends' actress is so keen to look good for her man -- she'll do whatever's necessary to avoid going under the knife.

A source told the publication, "Jen is doing whatever it takes to hold back time - short of plastic surgery."

The 39-year-old's regimen, says the Enquirer, includes private instruction with top yoga guru Mandy Ingber, and personal training sessions, both done three times a week -- at a cost of about $3,000.

Jen also pays a private chef $3,500 a month for organic, high-protein, low-fat meals.

"Jen is insecure about her legs, so she goes for anti-cellulite spa sculpting treatments twice a month," revealed the friend.

"They cost $1,000 a session, but Jen swears that the sculpting keeps her skin supple and smooth.

"She calls the treatments 'necessary tune-ups."

However, according to reports, her efforts might be might be going by unnoticed....

Jennifer Aniston's efforts to keep her man may have been in vain following reports that John Mayer tried to pick up another woman while on the European leg of his tour.

California native Chaton Anderson claims that the singer came on to her in a Dutch coffeeshop on July 20.

“I think he thought I was from Amsterdam, because he said, ‘I am John and I am a singer,’ she tells In Touch.

“I laughed because I knew who he was.”

Anderson says Mayer did his best to to convince her to have dinner — or after-dinner drinks — with him.

“I asked him what his relationship status was,” she says. “He said, ‘It’s vague.’ I asked him what that meant and he said, ‘You know, it’s very vague.’

"I just laughed. I never mentioned Jennifer and neither did he.”

Chaton says she gave Mayer her cell phone number but the phone was later stolen.

“I’ll never know if he called or not,” she says, adding, “I never would have guessed he had a girlfriend at all.”(Source: Showbiz Spy & Entertainmentwise.com)