Aguilera amazed by her new post-pregnancy boobs!

London, May 23 : Christina Aguilera is so amazed by her post-pregnancy boobs that she's kept the tags of her bras to prove how big her breasts got.

The Dirrty singer and husband Jordan Bratman have been stunned by the impressive growth in her bust, which got swollen to an E-cup, since she gave birth to son Max in January.

"It's kind of hilarious! I've never fit into an E-cup before," The Sun quoted her, as saying.

"I look at my husband and go: 'Guess what size this bra is?'

"And when I tell him, he's just amazed. We have kept the tags that prove it, to look back for memory's sake," she added.

ANI