Mel B, who has earned herself a reputation as something of a fitness guru, has opened up about her eating habits and how they've changed since she became pregnant. 

She revealed that despite eating healthily during the week she does indulge once the weekend arrives:

"I try to eat healthily apart from the weekends when I'll pig out and have pizza or go to the cinema and have hotdogs and popcorn or a bit of chocolate."

"My husband's a great cook, so during the week we eat the best salads, chicken and fish. It's good to give yourself a treat at the weekend - then your body doesn't want to overindulge all week."

Writing to fans on Twitter on March 24, she explained that her pregnancy is making her ravenous:

"what can i eat tonight,hahaha my life revolves round food food and more food,this baby is always hungry or is that just my excuse????"

She added:

"waiting for the sushi place to open,no no no i'm not eating anything raw since i'm pregnant,all cooked baby!!"

Watch Mel B work out with some lucky fans here: