Christina Aguilera 'Glowing' at Miley Cyrus Concert
02/24/2014 AT 02:45 PM EST
Christina Aguilera – who is expecting a baby with fiancé Matt Rutler later this year, PEOPLE confirmed – supported Miley Cyrus at Saturday night's Los Angeles stop of her Bangerz Tour at the Staples Center.
Clad in a loose white T-shirt, skinny jeans and sky-high heels, the Voice coach, 33, "looked radiant and glowing" as she walked around with girlfriends, a source tells PEOPLE.
After the concert, she Tweeted a photo of Cyrus, 21, in one of her revealing costumes, reminiscent of Aguilera's former "Stripped" days.
"Cheers from one dirrty girl to the next @MileyCyrus…wear em' loud & proud, girl- yes!!" she captioned the photo.
– Melody Chiu