When the cat's on break -- the mouse will play!

While on break from on-again/off-again boyfriend Tyga, Kylie Jenner celebrated her Lip Kit hitting one million Instagram followers with a night on the town at the Nice Guy in West Hollywood on Thursday night. Hunky Cody Simpson also stopped by the hotspot -- maybe the two were hanging so that Ky could make Ty a little jelly?!

With that outfit -- we have a feeling it worked!

For the night out, the reality star sported a flashy red embroidered bomber jacket by Louis Vuitton, a crop top and some skin tight leather pants. That's a lot of stomach skin, girly! Clearly the 18-year-old wanted all eyes on her -- but what's new?!

While inside the eatery, Kylie shared an Instagram page from inside the venue where she had her 18th birthday bash, along with the caption: "shoutout to jordyn that's my b***h cuz she tells me everything."

Earlier in the day, Kylie posted that her Lip Kit By Kylie had nabbed one million fans, and the teen couldn't be more excited. She posted a screen grab with the caption, "THANKS FOR 1 MILLION FOLLOWERS! I've been dreaming and working on this for two entire years and the experience has been even better than I imagined! Thank you thank you thank you!"