dress red carpet london uk isla fisher borat

Isla Fisher proved she's one hot mama in a red, curve-hugging Dolce & Gabbana mini at the London premiere of Burke and Hare.

Fisher, who's married to comedian Sacha Baron Cohen, gave birth to their second child this summer ... and already she's looking fab! Big sister Olive is already three years old.

The 34-year-old actress, who stars in the British black comedy alongside actors Simon Pegg and Andy Serkis, admits that during the filming of the movie she had been suffering from a bad case of morning sickness.

Way to push through it, Isla!