Christina Augilera was so busty since giving birth to her first baby, Max Bratman three months ago, she appears to be losing her pregnancy boobs.

Like countless other celebrity moms the Dirrty star has been quick to shed the pounds after giving birth.

Above: left photo is her post-pregnancy photo and right one is pre-preg. Her boobs weren’t small to begin with!

Judging by these pics, there is a clear contrast between her present bust-size, right, to the glory days of January, below.

Apparently, she has been doing a spot of boxing as well as lifting weights in a bid to get into shape for her chart comeback.

She’s also been doing a lot of swimming. And by the sounds of it, not the serious, 50 lengths kind.

Her neighbours have reportedly got a little upset with Aguilera and hubby, Jordan Bratman going skinny dipping at their  $12 million Beverly Hills mansion because they’re TOO noisy.

One told a US magazine: “They don’t just splash around – they laugh, scream, swear and make sexy noises.

“We’re happy that they’re happy, but we wish they would keep it down a bit.

“There are a lot of old people who live around here, and they don’t like noise after the dinner hour.”  – The Sun