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When you're rich and famous and can have anything you want, who's to let what God gave you get in the way, particularly in the boob department. While some pop princesses are more upfront than others about having had a bit of a boost in the bra, others seem to think that none of us will notice the seemingly overnight trebling of their cup size and deny all knowledge of surgery. But you only have to scour the net for a few seconds to find a raft of experts who are constantly on the lookout for the tell-tale signs of who has and who hasn't gone under the knife. This is our top ten pop boob jobs...

10. Amy Winehouse

Upped her bra size from a 32 D to a 34 D but then one got a bit leaky so she had to get herself back to hospital. Nice.

9. Kerry Katona

The former Atomic Kitten went on MTV and had her fake boobs removed and then auctioned off the 34GG implants on eBay to raise money for charity.

8. Posh Spice

Went up to a 34D and then a 34DD but has since had them reduced to fit with her maternal image. Whatever the size, they still seem to have incredible gravity-defying powers given that she's had three nippers...

7. Mariah Carey

The famous Carey curves have doubled in size over the past few years. An expert said that surgery "accounts for the space between her breasts, and the fact that she really can't move them together to get midline cleavage."

6. Kym Marsh

Former Hear’Say singer increased her bust size from a 32B to a 32D and was so pleased with the results, she chose to attend the British Soap Awards just days after surgery

5. Kellie Pickler

The American Idol star's boobs were the subject of much debate when they suddenly grew meteorically. She denied any work but has since alluded to having surgery.

4. Nicole Sherzinger

With the failure of her debut solo album, Nicole Sherzinger has found her way back to the Pussycat Dolls. She also appeared find a pair of very obvious chest enhancements that cannot be attributed to a "great bra".

3 Britney Spears

Rolling Stone magazine revealed that Britney purchased implants as a teenager but had them removed when her natural boobs became larger.

2 Christina Aguilera

Went from an innocent A cup Mickey Mouse Club teenager to the raunchy C cup star of the Dirrty video

1 Beyoncé Knowles

More than just bootylicious these days. Her alleged breast augmentation can be seen from comparing photos taken in 2002 and 2005 that show a considerable amount of increase in her bust says expert, Dr. Anthony Youn. We’re sure that boyfriend Jay-Z approves...