Did Whitney Port become even thiner?

Skinny mini: Whitney Port shows off some very slim legs at an event last night in Beverly Hills

She has always had a very slender frame.

But it seems as thought The Hills star Whitney Port has gone a little too far in her attempt to stay thin.

The 25-year old reality star and fashion designer attended an in-store event at the Kitson clothing boutique in Beverly Hills last night and she appeared to have lost any resemblance of any curves she once had.

Wearing a gorgeous low cut black and white striped dress and black patent booties the star showed off her very slim thighs and boyish upper body.

The designer, who attended the event with her boyfriend Ben Nemtin, recently claimed she cares more about being healthy than being skinny - visiting the gym three to four times a week, combining strength training and cardio.