Selena Gomez performed live for the first time since her kidney transplant at the American Music Awards.

The 25-year-old singer wowed the star-studded audience with an emotional performance of 'Wolves' - with collaborator Marshmello joining her on stage - after being introduced by Julia Michaels as ''one of the most incredible women'' she knows at the Microsoft Theater in Los Angeles on Sunday night (19.11.17).

The 'Fetish' hitmaker also used the ceremony to show off her new beach blonde hairdo.

Sharing a picture of her newly-died hair on Instagram, she captioned the post: ''so i am blonde now (sic)''

And after reportedly rekindling her romance with ex-boyfriend Justin Bieber - following her split from The Weeknd - the 'Sorry' hitmaker appears to approve of her new do as he hit the like button on the photo.

Justin and Selena - who dated on an off from 2011 to 2015 - are believe to have reconciled after recently spending time together, and she is said to have ''always had feelings'' for the pop star.

An insider said recently: ''Selena and Justin are back together.

''Selena and The Weeknd just fizzled and ended amicably -- it wasn't dramatic and it wasn't about Justin. But Selena always had feelings for Justin.''

However, Selena's pals are said to be hoping she treads carefully with the 23-year-old star because she is ''in a good place'' after undergoing her transplant.

The insider added: ''Her friends want her to be cautious because she has been in such a good place post-surgery.''

The news comes after Selena and The Weeknd - whose real name is Abel Tesfaye - called time on their 10-month romance in October.

A source close to the situation previously revealed it was the 'I Feel It Coming' hitmaker who instigated their split.

The pair are said to have been so busy they'd rarely seen each other in months and had barely been speaking over the phone.

The break-up is said to be completely unrelated to Selena hanging out with Justin once again.

Though, despite this, recent reports have suggested Justin has always been seen as Selena's ''soulmate''.

A source said: ''Since things ended with Justin for good, any other guys that Selena dated were placeholders.

''All the other guys were just flings. Justin always had her heart and attention. He was always her soulmate and her one true love.''