Justin Bieber: SNL promo + on Late Night.

Justin Bieber pulls up his shirt to show off his abs while making an appearance on Late Night with Jimmy Fallon on Tuesday (February 5) in New York City.

The 18-year-old singer not only boasted his six pack on the show, but it looks like he also kissed a mannequin head!

@NaomiCampbell Backstage @jimmyfallon with @justinbieber lovely to meet you .x N

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