Isla FisherIsla FisherDoes Isla Fisher have a secret to share...

About how she's looking so damn fine?

Come on, Isla, please pipe up.

Because looking that good just over a month after giving birth is really something to marvel at.

Baby Borat, or Olive as the wee baby girl of Isla and Sacha Baron Cohen is named, arrived into the big, wide world mid-October, and now, just weeks later, Isla's been snapped stepping out in trendy boots and skin-tight jeans.

Not. Fair.

But she's not the only mum to shape up and look bodylicious v soon after dropping a sprog

See our gallery of Isla Fisher and other celeb mums who've got their tums back in no time.