During Britney Spears and Christina Aguilera’s rapid rise to fame in the late ’90s, both stars were subjected to endless scrutiny and speculation that they upgraded their physical assets.

Now, new photos may provide confirmation – at least for one of them.

Aguilera, in Tokyo Tuesday to promote her film “Burlesque,” raised her arm to greet spectators, revealing a scar in her right armpit.

The incision is a common sign of transaxillary endoscopic breast augmentation, according to the Daily Mail, where implants are inserted through the armpit.

The 29-year-old mother of one has never directly commented on the rumors that she may have had a boob job, but Aguilera seemed hardly concerned at the event about potentially revealing her secret.The singer, who turns 30 later this month, happily posed with a birthday cake while her co-stars, Kristen Bell and Cam Gigandet, clapped.

A rep for Aguilera has not yet commented on the Daily Mail’s claim.

Source: NY Daily News