Posing up a storm in Sin City, the reality gals were joined by Khloe's bezzie Malika Haqq and made sure all eyes were on them with their glam get-ups.
Khloe showed off her trim figure as she squeezed into a skin-tight latex pink dress that featured a low scooped neckline. Hello, body envy! Adding white pointed heels and tousled blonde locks, the 31-year-old finished off her smokin' look with flawless skin and a nude pout.
Not letting the team down, Kourtney also earned major style points as she attended her ex's birthday party. Opting for a thigh-skimming dress that was covered in a green, black and brown animal print, the mume-of-three flaunted her amazing pins. and accessorised with giant hoop earrings and mega-tassled sandals. Fierce!
Meanwhile, Malika went for an LBD that featured a sexy thigh split skirt and seriously plunging front - check out that cleavage! The 33-year-old pal to the Kardashians finished things off with glossy locks and black sandals.
The trio of girls were at Mirage Hotel & Casino's 10ak Nightclub where Scott Disick was marking his 33rd birthday. Making his own style statement, the notorious party boy stood out in super ripped jeans and a bold bird and plant print bomber jacket.
Despite splitting last year, Scott and Kourtney - who are parents to Mason, Penelope and Reign - remain on good terms. It was rumoured that the pair had ended their nine-year-relationship due to Scott's extreme party lifestyle.
Earlier this year, Scott spoke out about Kourtney, saying: "She's my best friend, I'll love her until the day I die".
Appearing on Australia's Kyle & Jackie O show, he was asked whether a reunion was on the cards for the pair and explained: "I never thought a lot of things were going to happen in my life the way that they did. I'm don't really rule anything out. I have no plans in my mind of what's going to happen. If things are meant to be maybe they will be. I really don't know yes or know."
The star added: "There are things we both have to work on. As of yet now, we're at a good place, and I don't think either of us want anymore than where we're at."