Lydia and Billi were guests of honour last night (28 November) at the event in Loughton, Essex, and the pair had a great time catching up together before helping to illuminate the sky.
Both girls wrapped up warm for the event, opting for faux fur ensembles to keep them cosy as the temperatures outside dropped.
Billi, who has set up her own Bikram yoga studio since leaving the ITV2 show, opted for bright cerise, while fashion queen Lydia bundled up in black and cream.
Taking to Twitter after the event, Billi shared a cute photograph of herself and Lydia.
Alongside it, she wrote: "Had so much fun turning on the Christmas Lights in Loughton with @LydiaRoseBright #feelingfestive."
Lydia also told fans about her evening, adding: "Thank you to everyone who came along to the Loughton Xmas light switch on tonight!"
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