Washington, July 28 : Pop star Lily Allen accidentally flashed a nipple during the London launch of her new jewellery collection on Monday, but she simply laughed off the wardrobe malfunction.

The Smile hitmaker was promoting the self-titled range at top hotel Claridge''s, when her black corset slipped down and exposed her breast.

She, however, continued to smile for the cameras after readjusting her top.

The jewellery line, featuring gem-studded animal and flower designs, is expected to go on sale in stores in September this year.

This is not the first time that Allen''s has embarked upon a fashion venture, for she has previously designed a range of dresses for British clothing store New Look, and appeared in a new advertising campaign for Chanel''s latest range of luxury handbags. (ANI)