The usually edgy and risque star opted for a more sophisticated look during New York Fashion Week and looked absolutely stunning.
The "FourFiveSeconds" singer attended the Zac Posen Fall 2015 show in a maroon, custom design from Posen himself, which showed off her enviable curves and lots of cleavage.
She kept her hair in a long cascading pony-tail, rocked a sexy smoky eye and a pair of sandals that perfectly matched her dress.
We love that RiRi's changed up her look and think she totally owned the front row.
But, it was Naomi Campbell who owned the catwalk when she closed the designers show in true supermodel fashion!
The 44-year-old veteran model wore a sparkly magenta ball gown as she graced the runway with her presence. She looked stunning in the design and we love her loose waves and blunt bangs.
Some other familiar faces at Posen's show were Christina Hendricks, Kesha and Katie Holmes, who all looked equally as glam.
We're loving the "Dawson's Creek" alum's red coat and killer red lip, aren't you?!
Click "Launch Gallery" above to see more celeb sightings from NYFW!