A range of celebrities dressed up and hit Harvey Nichols last night to celebrate the launch of Marc Jacob’s new men’s fragrance, Bang.

Mischa Barton used the opportunity to make a comeback on the celebrity circuit showing off her slim figure in a black and beige halter dress and leather biker jacket, which she accessorised with a Channel bag. She was joined by pint sized Jamie Winstone who gave a nod to the summer boho trend with a bright orange 70s frock.

Pixie Lott played it safe with a black frock, which she teamed up with her trademark biker boots, while rival popstar Diana Vickers went for bright and beautiful in an on-trend turquoise frock.

Speaking about the inspiration behind Bang, Marc Jacobs said: “The name came to me first. We had been approached by Coty to do another men’s scent – we did one many years ago – and I was in the gym, and the name Bang came to me.

“As a word, it has so many connotations, including a sexual connotation. And I loved the immediacy and the sound of the word.”

See the gallery below for all the star style of the evening.