Nicole Richie shows off her slender figure in a clingy black maxi dress

She has attracted criticism for her weight in the past - for either being too big or too thin.

But it seems Nicole Richie has finally got it just right, judging by photographs of her in Canada on Thursday night.

The mother-of-two looked stunning in a black Winter Kate maxi dress, which clung to her lithe figure in all the right places.

Stunning: Nicole Richie looked amazing in a black Winter Kate maxi dress as she arrived for an event in Toronto

Nicole, who is in Canada to promote her brand House of Harlow, was one of the celebrity guests at the relaunch party for department store TNT.

Ahead of the evening's entertainment, Nicole tweeted: 'Holy Toronto! What a warm welcome! Everyone here is so nice! See you tonight at TNT!! #Iheartcanada.'

Reality TV star-turned fashion designer Nicole has apparently been whipping her body into shape with celebrity fitness trainer Tracy Anderson - and the results certainly show.

Toned: Nicole's dress clung to all the right places and highlighted her slender figure

However, earlier this year Nicole was forced to deny reports she was expecting her third child when she was seen leaving a gym near her Los Angeles home with something looking suspiciously like a baby bump under her workout T-shirt.

But Nicole slammed the report that she and rocker husband Joel Madden, 32, were expecting again, and said it was simply a change in her body shape.

She told celebrity website Gossip Cop: 'Contrary to recent speculation I am not pregnant.

Final touch: Nicole makes sure her dress is properly tied up as she makes her way inside

'This irresponsible reporting continues to feed an atmosphere of self-doubt and insecurity.

'To publicly point out a change in anyone's body is mean-spirited and cruel. People's bodies change and change again.'