The reality star beamed on the purple carpet in a floaty embellished cut-out dress at the WellChild Awards held at the Dorchester Hotel, an event which celebrates the bravery of seriously ill children.
Cheska teamed her outfit with a furry shawl and clutch bag, finishing off her look with nude peep toe heels.
It proved to be an emotional night for the blonde, who was with her best mate and former co-star Ollie Locke, as they toasted the inspirational award winners.
Taking to Twitter during the award presentations, Cheska said: "Lots of tears being shed at the inspirational and amazing @wellchild awards @ollielocke #WellChildawards x."
Meanwhile, Ollie, who met international music star Jason Derulo this week, added: "A fabulous inspirational evening at the @WellChild #WellChildawards congratulations to some truly worthy winners!! X."
Although Ollie recently announced his departure from MIC, Cheska will still be in the show and has been filming with her fellow co-stars over the past month.
Series six of Made In Chelsea will return this autumn.