Lady Gaga had a famous fan in the audience Sunday night. 

Tom Cruise was one of the excited audience members watching the Grammy winner perform in her Lady Gaga Jazz & Piano lessons Sydney show in Las Vegas. 

The superstar and the singer met backstage afterward, giving each other pecks on the cheek with the Born This Way singer posting, 'Thank you for coming to the show last night. I love you my friend @tomcruise.'

The A Star is Born star wore a shiny tuxedo complete with white shirt and bow tie as she performed standards such as Luck Be A Lady and Anything Goes.

Her blonde hair was pulled back in an updo. She wore stage ready makeup with a bright red lip, sparkly eye shadow and dark eyeliner. 

The Mission: Impossible actor looked dapper in a black suit and shirt. 

Tom is reprising his role as a ace flyer Pete 'Maverick' Mitchell in the upcoming Top Gun: Maverick.

It's been more than 30 years since the original film.

And he now portrays a flight instructor, training a detachment of Top Gun graduates for a specialized mission the likes of which no living pilot has ever seen.

The highly anticipated sequel co-starring Jennifer Connelly and Miles Teller opens in theaters May 27. 

Lady Gaga wrote the theme song, Hold My Hand, for the action adventure.

She called it 'a love letter to the world during and after a very hard time.' 

The single will be released Tuesday May 3.