THE loved-up pair hit Lillie's Bordello for the second time in two days this week. They were spotted in the Grafton Street club on Saturday night following Vogue's (27) appearance on the Saturday Night Show.
And they were back again on Monday night.
Singer Brian (32) - who is due to go on tour with Ronan Keating in the coming weeks - even performed with the venue's house band.
"He was in great form and having a laugh with some pals so he got up with the band to do a couple of tunes with them," said a source.
Earlier, model and DJ Vogue joined Katherine Lynch on the couch of her Wagon's Den show, and later hit in Lillie's.
They also coerced Corrie star Helen Flanagan out for a few late-night tipples. Vogue tweeted the next day: "The only thing that could get me out of this hangover hell is watching giraffes having a fight!".