Selena Gomez partied with Kendall and Kylie Jenner last night (04.04.14).

The 21-year-old singer joined the siblings at the 1Oak in Los Angeles for a star-studded bash thrown by Sean 'Diddy' Combs to mark his son Christian's 16th birthday.

The trio arrived, along with Khloe Kardashian, 29, at the event, dressed in an all-black attire, before Selena and Kylie, 16, took to their social networking sites to document the festivities with a number of cute snaps.

The 'Keeping Up With the Kardashians' star shared a photograph on Instagram of her cuddling up to Selena in the middle of the dance floor, while Kendall, 18, made a pouty impression behind them.

The fashion designer then posted a snap of her and the actress lying on a flower arrangement on the floor, while the pair held roses to their noses.

She accompanied the picture with the caption: ''Selena&Roses (sic)''.

Selena - who has been in an on/off relationship with Justin Bieber - also shared the same picture on her Instagram account but, instead, labelled it, ''kylie&roses (sic)''.

Meanwhile, the affair wasn't short of celebrity guests as French Montana, Meek Mill and Kendrick Lamar all performed at the bash to mark Christian's milestone.