We're used to Christina Aguilera proudly showing off her stupendous post-pregnancy breasts but now it seems her bouncy cleavage has deflated to its original size.

The Dirrty star embraced her new curves after giving birth to son Max in January - and was happy to flaunt her eye-popping bosom at every opportunity.

She even paid tribute to her ample assets in interviews, telling one reporter in June, "It's kind of hilarious! I've never fit into an E-cup before.

"I look at my husband and go, 'Guess what size this bra is?' And when I tell him, he's just amazed.

“We keep the tags that prove it, to look back for memory's sake!"

But it seems that Christina may have waved goodbye to her breast pals for good - if these pictures taken at her Inspire perfume launch over the weekend are anything to go by.

At least she's still got those tags!

See a pretty Christina flaunting her new fragrance below