Kylie was all smiles as her big sister's ex wrapped his arms around her while jamming out during an impromptu performance by Post Malone. Scott's rumored 20-year-old girlfriend (and Kendall lookalike! Though there were no pics of the two together, the model did share a snap of her and her friend, Charlotte Dalessio.
The star-studded party included a surprise DJ set by the Pizza Boys.
And the lovebirds - who began dating in April - were once again on high alert to avoid people, as they made a swift exit from Ours Restaurant in Kensington, London on Monday.
The stylishly clad couple shielded their faces as they hurried out of the swanky hotspot after seeing Scott Disick's one-time fling Ella Ross.
Bella, 19, and Scott, 33, were snapped kissing and snuggling on Wednesday in Cannes, France, and a source close to Kourtney Kardashian's ex tells ET that although the unexpected pair is "hooking up," it's all just fun. The two were spotted having lunch in Los Angeles together a year later in December 2012, and were still pals by April 2013, when Kylie tweeted a picture of the two making silly faces for the camera. They were spotted at Los Angeles International Airport together on Monday, before their PDA show on Wednesday.
"Kylie and I don't really get to hang out all that much, we used to hang out more often when we were both a little bit younger. We have lots of mutual friends." As for Bella's relationship with Scott, the two were first linked together earlier this month, when sources told ET they had a dinner date in L. Since then, they have shown no signs of slowing down.
We love it when Kylie channels those bad gal vibes.
The soft, faux leather offers a flattering fit that looks amazing when paired with a black crop top or bodysuit for a night on the town. Alternatively, check out our edit below for similar styles on the high street.
It was reported that Travis Scott asked to be kept away from girlfriend Kylie Jenner's ex Tyga at the Wireless music festival over the weekend.
From the time Kim Kardashian couldn't stop taking selfies on the way to dropping Khloe Kardashian off at jail to the day that Scott Disick officially became British royalty, you just never know what to expect with them.
Take a walk down memory lane and relive all of their best moments in preparation for the Kuwtk anniversary special on Sept. » Younes Bandjima was caught hugging Sofia Richie on Aug.
It's hard to believe it, but Keeping Up With the Kardashians is 10 years old this year.
The world has been watching this family laugh, cry and so much more for the last decade and we've enjoyed every second of it.