EXCLUSIVE: How Demi Lovato Is Spending Her 25th Birthday

This video is unavailable because we were unable to load a message from our sponsors.

If you are using ad-blocking software, please disable it and reload the page.

Demi Lovato
turns 25 on Sunday, but she’ll be celebrating the following weekend!

ET caught up with the “Sorry Not Sorry” songstress recently, where she exclusively dished on her birthday plans.

“I am going to the Conor McGregor-Floyd Mayweather fight,” she said.

“That's all I've been looking forward to doing… ever since the fight was announced, I was like, I'm going to that fight. It's gonna be amazing and I can't wait to see who wins,” she added.

Demi Lovato Says New 'R&B'-Inspired Album Is Coming 'Sooner Than You Think,' Talks Tour & Documentary

The highly anticipated boxing match pins the five-division professional boxing world champion (Mayweather) against the current UFC Lightweight Champion (McGregor) and takes place on Saturday, Aug. 26 at the T-Mobile Arena in Las Vegas.

And Demi won’t be there solo.

“I'll go with friends… yeah, that's what I think about when I think about my 25th birthday. I don't even have a party planned. I'm just thinking about the fight.”

Demi Lovato Knocks Down Sylvester Stallone in Epic Boxing Match -- Watch!

The celebratory plans make perfect sense. Demi, a longtime boxing fan, has posted several Instagram videos of herself in the ring – though her favorite workout is jiu-jitsu. In fact, Demi revealed to ET that she’s almost a blue belt in the sport.

“I've been a white belt for over a year now and so it's time. But I can't, you can't ask for it… It goes white, blue, purple, brown, black. So I'll have a blue belt probably by the end of the year. But we'll see what happens.”

Demi Lovato on Working Out With Kate Hudson, Therapy, and How She Shrugs Off Body Shamers: My Body 'Is What It Is'

The former Disney star and fitness guru recently teamed up with Kate Hudson for a new Fabletics workout line, available now.

More on that -- and why she sees a therapist twice a week -- in the video below: