Ashlee Simpson is still keeping mom on the subject of her impending motherhood.

The singer had been expected to announce her pregnancy on Monday night's Tonight Show with Jay Leno.

In the event, Ashlee avoided any embarrassing questions about her bump by opting out of an interview with Leno in favour of just performing new single, Little Miss Obsessive.

Her loose-fitting black dress did nothing to dispel those baby rumours, however...

Ashlee went for a similar look at the recent Conde Nast Traveler 8th Annual Hot List Party in NYC - click here to play spot the baby bump!