Popsugar Celebrity Celebrity Instagrams Kylie Jenner at Tristan Thompson’s Birthday Party March 2018 Kylie Jenner Flaunts Her Postbaby Body in a Crop Top at Tristan Thompson's Birthday Party 11 March 2018 by Terry Carter Image Source: Instagram user kyliejenner Kylie Jenner is "back at it again." At least that's what the new mom captioned a recent photo of herself showing off her postbaby figure in a crop top sweater and lace-up pants after giving birth to baby Stormi Webster last month. On Saturday, Kylie stepped out with her best friend, model Jordyn Woods, to attend Tristan Thompson's 27th birthday party, but first, the reality star spent the afternoon bonding with her daughter and sharing sweet videos on Snapchat. It was a busy day for Kylie, who also attended big sister Khloé Kardashian's baby shower that evening. Keep reading to see more photos of Kylie's sexy night out. Related: We Don't Know How It's Possible, but Stormi Gets Cuter and Cuter With Every Photo back at it again A post shared by Kylie (@kyliejenner) on Mar 10, 2018 at 8:40pm PST 1 / 3 sisters A post shared by Kylie (@kyliejenner) on Mar 10, 2018 at 10:19pm PST 2 / 3 Image Source: Instagram user kyliejenner 3 / 3 Celebrity InstagramsKylie Jenner