Creeping up behind the star, Jay-Z leaned in for a kiss and a hug with his wife, in a rare show of PDA between the two.
He then ran off stage just as Beyonce was finishing her set.
Back-up dancers and audience members alike roared with delight at witnessing the moment between the two, with Beyonce sharing snaps of her surprise from her tumblr account.
The couple, who have been married for five years, are famously private about their relationship, refusing to discuss each other in interviews. But recent events have led fans to beleive they are relaxing this rule somewhat.
And in contrast to some other surprises she's had so far, we're sure Beyonce didn't mind her husband's appearance. Earlier in the tour Beyonce got part of her hair trapped in an electric fan whilst performing (although she still didn't miss a note, despite this minor mishap), and also had her bum slapped by an over excited fan.
