MIC star Jamie, who is dating student Tara Keeney and admitted to "liking" Phoebe-Lettice Thompson, definitely seemed to be letting his hair down at the bash.
The blonde reality star was snapped at Dublin's Everleigh Garden just as he planted a huge smacker on Faye Rooney's cheek.
Earlier, Faye had tweeted: "Very excited for the MIC crew to come to @EverleighGarden tonight. Mainly @JamieLaing_UK #Fave."
Jamie was also pictured laughing and joking with other female partygoers, alongside Francis, before posing for one-on-one pictures with fans.
The McVities heir wore a white vest and jeans to the event, while Francis opted for a smarter look with a blue checked shirt. We can't help but notice his burst button though!
The lads only jetted into the city yesterday daytime (19 June) but it seems they were on good form throughout the night.
Jamie had earlier been on holiday with Tara, proving that she was not bothered by his confession to Phoebe on Monday night's finale episode.
We wonder what she'll make of these pictures?