Chloe, who was wearing a funky yellow and black checked skirt with a tight top, was pictured arriving at the event with her brother Charlie and his ex Ferne McCann.
Once inside the bash, held at London nightspot Kanaloa, Chloe met up with Mario Falcone and together the gang posed for several selfies together.
In last night's TOWIE finale episode, Chloe and Lauren Pope were brought together by Charlie and Bobby Norris following their recent row.
The girls have fallen out after Chloe kept her month-long fling with Mario - which is now over - a secret, and Lauren felt she should've been told about it.
In the show, however, they decided they weren't ready to discuss their differences and, later, Lauren didn't go to Jessica Wright and Ricky Rayment's Prince and Princesses party because she didn't want to "add to the tension" between herself and Chloe.
Chloe told Bobby: "The more she behaves like that the more it winds me up. Honestly, mark my words, I don't think we'll ever be friends again. Ever."
Earlier this week, Chloe confirmed that she and Mario are "still friends" and last night was no different.
Alongside a cute picture of herself and Mario, Chloe commented: "Me and my boo @mario_falcone17 #justfriends #stillfriends."
Chloe was also snapped with her brother Charlie, who still appears to be sporting his 90s curtains hairstyle from the show last night. There we were thinking his new 'do was part of his Prince costume!
Making a joke about his locks, Chloe said: "Me and @charlessims_ last night #charliespartoftheband."
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