Jennifer Aniston has sparked lip work rumors, NOW reports.

Jennifer Aniston spark lip work rumors

'It seems obvious she had some work done,' a close friend reveals.

‘[Her lips have a] stiff unnatural pucker that just didn't fit the rest of her face.'

Insiders reckon Jen is doing her best to look good for her toyboy John Mayer, 30.

'There's a lot of pressure on Jennifer dating John,' the pal tells the Daily Mail.

'Every other girlfriend he has had has been 10 years younger than Jen, and she's very competitive about keeping up.

'She's obsessing about her face because it's sort of been the only part of her that's aged.

'From the neck down she's like an Olympic athlete, with great proportion, tone and skin color.

'But she worries about her thinning lips.'

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