It may have been Tim Arnold's gig, but it was his girlfriend Jessie Wallace who stole the show at the Soho Theatre with her saucy outfit.
Jessie Wallace stole the show at her boyfriend's London gig, appearing on stage in lacy leggings and suspenders
As Kat Moon on the popular soap, we've seen her use her considerable vocal power during volatile arguments.
But on Sunday night, she used them for belting out songs with her boyfriend, including On Every Soho Street, which was written for her by Tim.
Looking dapper in a suit and strumming the guitar, Tim looked lovingly in Jessie's eyes as they sung the together.
Wallace managed to tear herself from his gaze to address the crowd, and let it rip as she threw her hand up and punched the air.
She may be better known as an actress, but she didn't seem nervous singing to the small crown - smiling and dancing on stage, before giving Arnold a warm embrace after her set.
Even burlesque dancer Giddy Heights, who wore a feathery outfit that opened up to reveal a flamboyant dress and nothing else couldn't overshadow Jessie's stage appearance.
Spandau Ballet's Gary Kemp also performed a duet with the singer.
It's not the first time she has performed with Tim.
In August, she performed at the same venue with her beau, rocking out during a duet and showing off a sassy side to her that EastEnders viewers will know and love.
The pair first met at April's Soap Awards and began dating a month later.
Tim, 37, is the godson of June Brown, who plays Dot Cotton in EastEnders, and the son of actress Polly Perkins - who plays Dot's sister Rose.