Demi Lovato sang the Star Spangled Banner before the Mayweather vs. McGregor boxing match in Las Vegas Saturday.

But the 25-year-old Disney alum was the one throwing the punches on Monday, as she proudly displayed her new blue belt on Instagram.

The night earlier Demi was in top form as she sported a fierce sapphire leotard and sassy chaps for a performance of Sorry, Not Sorry at the MTV Video Music Awards.

She's got the blues! Demi Lovato packed a punch while she proudly displayed her Brazilian Jui Jitsu blue belt for Instagram on Monday

The Sorry Not Sorry singer celebrated her athletic accomplishment with a shot of her smiling brightly in a martial art's gi, along with the caption 'so beyond excited because I just received my blue belt in #brazilianjiujitsu!!!'

The Sonny With A Chance starlet sports a makeup-free glow and ear-to-ear smile in the celebratory snapshot.

Demi - full name Demetria Poot Lovato - explained how she fell for the martial art in the heartfelt caption.

Player vs. player: The night earlier Demi was in top form as she sported a fierce sapphire leotard for a performance of Sorry, Not Sorry at the MTV Video Music Awards

It takes a village! The Confident singer thanked her trainers and coaches David Dunn, Harlan Berk, and Tarsis Humphreys 'for giving me my belt'

Love at first fight! The Sonny With A Chance starlet sports a makeup-free glow and ear-to-ear smile as she explained 'I fell in love with #BJJ over a year ago and have been training several times a week ever since'

'I fell in love with #BJJ over a year ago and have been training several times a week ever since.'

The Confident singer thanked her trainers and coaches David Dunn, Harlan Berk, and Tarsis Humphreys 'for giving me my belt' but Demi reserved a bulk of her love for pal and mentor Danielle Martin.

'[Thanks to] one of the most important and special women in my life today @officialdaniellemartin/@trueboundaries.

Girls in gi's! Demi sent pal and mentor Danielle Martin. '[Thanks to] one of the most important and special women in my life today @officialdaniellemartin / @trueboundaries'

Kick it up! The Texas native's look revealed almost all of her gravity-defying cleavage while flirty chaps and a cascading ponytail gave the Cool For The Summer singer theatrical flair

Guiding light: The Confident singer also told her mentor 'I love you so much and couldn't be more grateful for you.' Above Demi is seen with trainer Jay Glazer (left) and Martin (right)

'I love you so much and couldn't be more grateful for you.'

The night before becoming a blue belt, Demi showcased her martial arts mastered figure in a cheeky cobalt bodysuit that looked straight from Mortal Kombat.

The Texas native's look revealed almost all of her gravity-defying cleavage while flirty chaps and a cascading ponytail gave the Cool For The Summer singer theatrical flair.

Demi fans can look forward to her new album Tell Me You Love Me due out on September 29.