With Halloween around the corner, RiRi had no qualms about unleashing her inner Morticia Addams at the glitzy event as she ditched the paint splattered bomber jackets and box-fresh trainers for a much more brooding ensemble...
The BBHMM singer slipped into this teeny tiny silk LBD that boasted a plunging v-shaped neckline which she co-ordinated with a billowing, cloak-like black jacket and a matching matte lip.
Anyone else getting Dracula vibes?!
The star took centre stage in front of her brand new album artwork and clutched a huge crimson balloon as she pulled her most sultry pose for the professional cameras, even letting her silk robe slip down at one point.
But of course, Rihanna just wouldn't be Rihanna without a touch of sparkle...
The femme-fatale glammed up her look with the addition of a diamond encrusted choker, sassy hoop earrings and a delicate anklet that drew attention to her heeled sandals.
And, oh, we're just a little bit obsessed with her seriously fierce bantu knots and tousled waves combo...
RiRi continued to party well into the early hours with Bruce Willis' daughter Tallulah Belle in tow.
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