Has bikini girl Cameron Diaz had a secret boob job?

Has bikini girl Cameron Diaz had a secret boob job?

Cameron Diaz has sparked speculation of a breast enlargement after her latest outing in a tiny bikini.

The Charlie's Angels star, 39, was spotted on the beach in Hawaii over the holidays looking rather shapely, prompting rumours she's gone under the knife.

The actress is said to have had implants to boost her chest by a cup size, according to the National Enquirer.

There's something about Cameron: Miss Diaz has sparked speculation of surgery after her visit to Hawaii earlier this month

Secret boost? The star, pictured left earlier this month and right, in January 2011, is rumoured to have gone up a cup size

Plastic surgeon Dr Anthony Youn, who has not treated the star, told the publication: 'I believe she has had a breast augmentation using relatively small silicone implants.'

'Since swelling can take severely weeks to settle down, I suspect she had the surgery at least two to three weeks ago.'

Cameron has previously said she'd prefer a more curvy figure, telling Marie Claire in 2009: 'I'd love to be more voluptuous. It's just not my body type."

The star, who had her nose fixed in 2006 after breaking it four times, said in 2010 that she would rule out more surgery.

Diversion tactic? The Bad Teacher star also unveiled a new haircut

'Yeah, well, hey. I’m not doing anything right now,' she told British Vogue. 'But we’ll see. So far, so good. But I’ll never say never to anything.'

As well as her curves, Cameron also unveiled a short new hair cut during the beach holiday with friends.

The star, who has previously dated Justin Timberlake and Alex Rodriguez, has most recently been romantically linked to rapper Diddy,

She will soon return to the big screen in the upcoming flick, What To Expect When You’re Expecting.

She joins an ensemble cast which includes Matthew Morrison, Jennifer Lopez, Brooklyn Decker, Chace Crawford and Cheryl Cole.

She plays Jules – an aspiring singer and a host to a weight loss fitness show - in the Kirk Jones directed movie which is expected to hit screen in May.