The X Factor winner famously revealed that she'd conceived her third child in a quickie with her husband at a hotel just before hitting G-A-Y on New Year's Eve.
And on Saturday night she was back at the popular hotspot to celebrate her debut album, The Power of Love, topping the UK album chart on its first week of release.
Dressed in sparkling trousers and a fitted black T-shirt, the pregnant singer, 36, belted out a few tracks, including Christmas number one 'Skyscraper', before being greeted on stage by Naomi Campbell and a cake.
We know. Random.
Naomi's a big fan of Sam and was there to present her with an enormous teddy bear and a tasty cake to mark The Power of Love's chart success.
Unfortunately for the baker, it seems most of the cake ended up on the floor and all over Sam as she indulged in a cake fight with G-A-Y's owner.
But Sam was the perfect guest performer, whipping out a brush and pan to help clean up the mucky cake from the stage before leaving.
What a waste of good cake!
Sam is the first X Factor winner since Alexandra Burke in 2009 to top the UK album chart with a debut record. The Power of Love sold nearly 73,000 copies in its first seven days of release, making it the fastest selling album of the year so far.
Meanwhile, Sam announced her third pregnancy earlier this month, later admitting it was the result of a moment of passion with husband Craig on New Year's Eve.
"It was New Year's Eve before I went out to perform at G-A-Y club," she told Daily Star. "We were staying in a hotel around the corner and I said: 'Come on we have five minutes, let's go!' We've been married for ten years so there is no romance any more."
Got an iPad or iPhone? Reveal Mag is specially designed to fit!
Celebrities who have announced pregnancies in 2014 in pictures!
Copyright: WENN Lexie Appleby/Future Image/Bridow/Instagram
Watch Sam's Christmas number one video for 'Skyscraper' below: