London, Feb 13 : Petra Ecclestone, who is expecting her first child with her husband James Stunt, was spotted hiding her baby bump as much as possible under her dark outfit.

The 23-year-old heiress tried to keep her pregnancy shape under the wrap, during her visit to Knightsbridge on Tuesday, the Daily Mail reported.

Ecclestone was seen wearing an all black ensemble, which included loose-fitting jumper, a pair of leather trousers and a furry coat.

The model, who also sported a pair of dark sunglasses and carried a black leather Hermes Birkin bag, preferred to stopover a tech store with her phone in hand, instead of visiting the designer boutiques.

The blonde socialite has been spending time in London without her sister, who is currently on holiday in Dubai. (ANI)