Kieran was on hand to support Katie as she joined the world's most famous drag queen RuPaul, as well as TV host Jonathan Ross on the judging panel.
Katie and Kieran were all smiles - and looked rather merry - as they made their way to a taxi after leaving the venue.
Celebrity Big Brother winner Katie strutted her stuff on the pink carpet on Thursday evening (28 May), wearing a chequered peplum top with a plunging neckline, a tight pencil skirt and killer black heels.
Katie and Jonathan were enlisted by RuPaul in the search to find a UK Ambassador, and it's the first time the US reality show has been filmed in the UK.
It was a star-studded night as former TOWIE star Sam Faiers, ex-Pusssycat Doll Ashley Roberts and singer Dionne Bromfield were all in attendance.
RuPaul's Drag Race will air every Monday and Tuesday at 10pm from 1st June on truTV, Freeview channel 68, Sky channel 198 and FreeSat channel 154. It's followed by RuPaul's Drag Race: Untucked, that contains never-seen-before behind the scenes content.
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All you need to know about Katie Price: