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There's no denying that a baby bump is the latest Hollywood accessory, and we look back at the trailblazers of the trend!

Beyonce, Jessica Simpson and Mariah Carey's pregnancies are the latest talk of the town, but Madonna, Catherine Zeta-Jones and Demi Moore set the bar high for these celebrity moms to slim down quick post-baby.

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Catherine Zeta-Jones's pregnancy to daughter Carys was one for the record books. The actress accepted an Oscar for her role in Chicago just one month before giving birth. Less than eight weeks later, the new mom was spotted looking significantly thinner, and well on her way towards her pre-baby physique.

In 1996, Madonna stunned fans when she debuted her slimmed down figure just two months after giving birth to daughter Lourdes Leon. The new mama bounced back in record time to do press for her film, Evita, which garnered massive critical praise for the actress.

Demi Moore's toned figure has been the talk of the town since she first hit the biz, and the mom of three is notorious for bouncing back in record time.

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Watch the video a complete rundown of incredible celebrity transformations post baby.