Christina Aguilera channels Dirrty era at Portola Festival, headlines San Francisco with silver-chaps show

Christina Aguilera, 44, revived her Dirrty era during a Saturday night headlining slot at the Portola Music Festival in San Francisco, stepping onto the stage in a look drawn from her Stripped era: sparkling silver chaps paired with a black leather bodysuit, studded with silver chains and beads, finished with fingerless gloves, fishnet tights and tinted shades. She opened with Dirrty as flames shot up on stage and told the crowd, 'It's been 20-plus years... It's been such a ride.'

The Portola set also marked a career pivot, with Aguilera lending lyrics to Grindr. During the weekend, U.S. users heard Come on Over when they received a new message, a cheeky nod to the singer's 2002 hit.

Rumors about Aguilera's figure have circulated for years. The Grammy winner has not publicly addressed speculation she is using Ozempic after appearing to shed as much as 50 pounds, and there has been chatter about a possible breast augmentation after showing a scar under her arm in 2010. Earlier this year, Aguilera told Glamour that she no longer feels compelled to respond to public scrutiny of her body. 'When you're a teenager, you have a very different body than when you're in your 20s,' she said, describing the pressure to stay thin. 'I started to fill out, and then that was unacceptable because it was like,