The events agency owner joined the likes of Ashley James, Vogue Williams and Casey Batchelor at the 'A Night With Nick' fundraising party at the Rah Rah Room in London.
She told fans before the charity event: "I don't often wear red but hey - it's Christmas!!!"
Selina has emerged as the most talked about and divisive candidate on this year's Apprentice, but her bid to win Lord Sugar's business partnership came to an end last week when she was fired following the property selling task.
She's been very vocal when it comes to sharing her thoughts on the programme and Lord Alan Sugar, not holding back with her criticisms, which have included alleging the show is fixed and suggesting Lord Sugar is "bored" of the whole process.
BBC, however, has strongly denied her allegations, saying: "The show is in no way 'fixed' and we strongly refute any insinuation to the contrary. The final two candidates are decided on by Lord Sugar in the boardroom at the end of episode 11."
The Apprentice continues tonight at 9pm on BBC.