From Kim Kardashian to Cara Delevingne: Who wore what at the CR Fashion Book Paris Fashion Week party

The stars were out in force for the bi-annual party in the French capital

Gigi Hadid, Justin Bieber and Kendall Jenner (REX)

Paris Fashion Week is drawing to a close today but before the city goes back to some semblance of normality the stars were out in force last night for the CR Fashion Book party.

The party is a bi-annual event hosted by ex-French Vogue editor Carine Roitfeld to launch the fifth issue of her self-titled fashion magazine.

The guestlist read like a who's who in fashion with a impressive array of celebrities in attendance; the Kardashian clan and Selena Gomez made an appearance, models including Gigi Hadid and Joan Smalls attended and designers Karl Lagerfeld and Ricardo Tisci took a break from their showrooms to attend.

E! reports that Kim Kardashian, Kendall Jenner and Gigi Hadid got on stage to serenade the fashion editor who celebrated turning 60 earlier this month with a rendition of Happy Birthday.

And the all important dress code for the event which was held at The Peninsula hotel was 'inspired by Carine,' no modesty there of course.

Practically, that meant all black ensembles with necklines hovering somewhere around belly button level.

Issue 5 of the magazine has already hit the headlines with features that include Beyonce's poem to her daughter, a modelling debut from North West and Conchita Wurst posing with Karl Lagerfeld.