Who's That guy?.. Gary

It ain't what you know, it's who you know and US singing sisters Brit and Alex are well-acquainted with Gary Barlow - sort of.

While the Take Thatter was in the States his old pal Lulu invited him to visit the girls in Atlanta.

Brit - who will be performing Let It Go at G.A.Y on April 26 - told us: "We had no idea who Gary was, but Lulu got him to play the piano and he was amazing.

"Then we bumped into him at the Brits.

Lulu's been trying to get us working together - that would be cool."

If you remember his name, girls.

Fuente: Mirror.co.uk