The Stars Saved Their Sexiest Looks For Last at PFW

Paris Fashion Week may be coming to an end, but that's every reason for the stars to revel in the moment — and flaunt their boldest looks. Carine Roitfeld's CR Fashion Book launch party was just the excuse they needed. And since we happen to be in the right mindset to pick up on trends, we couldn't believe how many plunging necklines we spotted. From Rosie Huntington-Whiteley and Cara Delevingne in statement stripe-covered jumpsuits to Joan Smalls and Selena Gomez in elegant satin numbers, this was the only way to send Fashion Month out with a bang. (And yes, Justin Bieber even made an appearance, too). Scroll down to see all the photos of the stars debuting their sexiest looks along with some celebratory snaps — consider this the grand finale of Fashion Month.

Kendall Jenner
Billy Farrell Agency | Matteo Prandoni/BFAnyc.com

Kendall Jenner

Kendall Jenner in Givenchy at the CR Fashion Book launch party.

Rosie Huntington-Whiteley
Getty | Kristy Sparow

Rosie Huntington-Whiteley

Rosie Huntington-Whiteley in Balmain at the CR Fashion Book launch party.

Selena Gomez
Getty | Julien Hekimian

Selena Gomez

Selena Gomez in Louis Vuitton at the CR Fashion Book launch party.

Joan Smalls and Cara Delevingne
Getty | Kristy Sparow

Joan Smalls and Cara Delevingne

Joan Smalls in Givenchy and Cara Delevingne at the CR Fashion Book launch party.

Kim Kardashian
Getty | Kristy Sparow

Kim Kardashian

Kim Kardashian in Givenchy at the CR Fashion Book launch party.

Olivia Palermo
Getty | Kristy Sparow

Olivia Palermo

Olivia Palermo at the CR Fashion Book launch party.

Gigi Hadid
Getty | Pierre Suu

Gigi Hadid

Gigi Hadid at the CR Fashion Book launch party.

Nina Agdal
Getty | Julien Hekimian

Nina Agdal

Nina Agdal at the CR Fashion Book launch party.

Justin Bieber
Getty | Pierre Suu

Justin Bieber

Justin Bieber at the CR Fashion Book launch party.

Lindsey Wixson
Getty | Kristy Sparow

Lindsey Wixson

Lindsey Wixson at the CR Fashion Book launch party.

Hanelli Mustaparta
Getty | Julien Hekimian

Hanelli Mustaparta

Hanelli Mustaparta at the CR Fashion Book launch party.

Leigh Lezark
Getty | Julien Hekimian

Leigh Lezark

Leigh Lezark at the CR Fashion Book launch party.

Carine Roitfeld
Getty | Kristy Sparow

Carine Roitfeld

Carine Roitfeld in Givenchy at the CR Fashion Book launch party.

Kris Jenner, Kim Kardashian, Carine Roitfeld, Riccardo Tisci, and Ciara
Billy Farrell Agency | David X Prutting/BFAnyc.com

Kris Jenner, Kim Kardashian, Carine Roitfeld, Riccardo Tisci, and Ciara

Kris Jenner, Kim Kardashian, Carine Roitfeld, Riccardo Tisci, and Ciara at the CR Fashion Book launch party.

Gigi Hadid, Justin Bieber, and Kendall Jenner
Billy Farrell Agency | David X Prutting/BFAnyc.com

Gigi Hadid, Justin Bieber, and Kendall Jenner

Gigi Hadid, Justin Bieber, and Kendall Jenner at the CR Fashion Book launch party.

Carine Roitfeld
Billy Farrell Agency | David X Prutting/BFAnyc.com

Carine Roitfeld

Carine Roitfeld at the CR Fashion Book launch party.

Paris Hilton
Billy Farrell Agency | David X Prutting/BFAnyc.com

Paris Hilton

Paris Hilton at the CR Fashion Book launch party.

Riccardo Tisci, Karl Lagerfeld, Carine Roitfeld, and Kim Kardashian
Billy Farrell Agency | David X Prutting/BFAnyc.com

Riccardo Tisci, Karl Lagerfeld, Carine Roitfeld, and Kim Kardashian

Riccardo Tisci, Karl Lagerfeld, Carine Roitfeld, and Kim Kardashian at the CR Fashion Book launch party.