Fashion's finest descended on Lincoln Center in NYC on Monday evening for the CFDA Fashion Awards. Stars like Lupita Nyong'o, Blake Lively , Olivia Wilde , and Marion Cotillard walked the red carpet in gorgeous outfits by their respective designer dates for the annual event, which was hosted by film director and screenwriter John Waters. Lupita, who presented the womenswear designer of the year award during the ceremony, made her CFDA debut in a printed top and matching shorts, while Blake kept things short and sweet in a beaded Michael Kors  minidress and '60s-inspired beauty look. It was Rihanna , though, who may have stolen the show; she hit the scene in a revealing sheer beaded gown for her big night. She was honored with the fashion icon award this evening and showed off her signature edgy style while posing for photos with a fur stole all night long (don't worry, she was wearing underwear!). Also on hand for the high-profile event were models Karlie Kloss, Alessandra Ambrosio, and Chanel  Iman as well as designers Diane von Furstenberg , Betsey Johnson , and Rachel Zoe , who walked the carpet with husband Rodger Berman. Elsewhere, comedian Chris Kattan reprised the role of his infamous SNL character Mango, popping up for the event in a black cape and shorts.
The annual CFDA event honors American designers for their contributions to the fashion industry in categories including womenswear, menswear, and accessories. Some of the night's nominees included Marc Jacobs , Alexander Wang , and Mary-Kate and Ashley  Olsen, who picked up the top prize for womenswear in 2012 and won accessories of the year on Monday night.
Lupita Nyong'o arrived in style.
Blake Lively  walked the red carpet in Michael Kors .
Jaime King wore white.
Alessandra Ambrosio posed in a red gown.
Jennifer Hudson  showed some leg in a black dress.
Emmy Rossum wore a J. Mendel gown.
Ashley and Mary-Kate Olsen  donned matching all-black looks.
Marion Cotillard looked gorgeous in a short white dress.
Blake Lively  and Karlie Kloss got close at the CFDA Awards supper.
New mom Olivia Wilde  hit the red carpet in black fringe.
Chrissy Teigen and Rachel Roy  laughed together at the supper.
Rachel Zoe  walked the red carpet with her husband, Rodger Berman.
Greta Gerwig arrived on the arm of designer Zac Posen .
Rihanna  showed off her backside.
Naomi Campbell  set off a photographer frenzy in her sequined gown.
Blake Lively  posed with Michael Kors .
Heidi Klum  stunned in a coral dress.
Chris Kattan dressed up as his '90s-era SNL character Mango!
Liya Kebede wore Wes Gordon .
Rihanna  smiled after accepting her award alongside Anna Wintour.
Mary-Kate and Ashley  Olsen walked off stage after accepting their award.
Beth Behrs showed a bit of midriff.
Solange Knowles channeled Diana Ross in a sequined column gown.
Rachel Roy  arrived in a printed dress.
Bridget Moynahan wore a strapless purple gown.
James Marsden arrived at the CFDA Awards.
Anna Chlumsky showed off a sliver of stomach.
Chrissy Teigen wore an orange Rachel Roy  ensemble.
Karlie Kloss wore a cream-colored frock.
Diane von Furstenberg  arrived with Steven Kolb.
Lupita Nyong'o looked stunning in bold prints.
Betsey Johnson  got goofy on the red carpet.
Rachel Zoe  stepped out in NYC for the event.
Dree Hemingway sported prints.
Iman wore bold hues.
Joan Smalls showed skin at the CFDA Awards.
Busy Philipps attended the CFDA Awards in a bright dress and beads.
Keri Russell  looked gorgeous.
Sophia Bush attended the CFDA Awards.
Rihanna  laughed as she accepted her award.