Pharell Williams girlfriend nipple slips out

PHARRELL Williams might be riding high at the top of the UK charts with but his fiancee certainly didn't Get Lucky last night.

Leggy blonde model Helen Lasichanh was left red-faced after she took a tumble outside of the Met Gala party and exposed her naked breast to passers by.

Helen was trying to manouvere tricky cobblestones in skyscraping stiletto heels when she lost her balance and fell in the street

 And despite both Pharrell and the couple's burly minder trying to lend her a helping hand there was no saving her from the epic wardrobe malfunction that resulted from the fall.

In fact the bouncer himself managed to make the situation even more cringe worthy by strategically grasping Helen's exposed boob as she fell.