01/31/2014 04:39 EST | Updated 02/03/2014 09:59 EST

Miley Cyrus Rocks Canadian Tuxedo On 'The Tonight Show' (PHOTOS)

NBC via Getty Images
THE TONIGHT SHOW WITH JAY LENO -- Episode 4605 -- Pictured: Miley Cyrus during an interview on January 30, 2014 -- (Photo by: Paul Drinkwater/NBC/NBCU Photo Bank via Getty Images)

It seems as if Miley Cyrus is going through a radical style transformation- and we love it!

The singer, who sported crop tops, "Pretty Woman" boots and revealing jumpsuits in 2013 has been amping up her fashion game and her appearance on "The Tonight Show" on Thursday confirmed that.

The 21-year-old sported a double-denim ensemble aka. the Canadian Tuxedo, when she sat down with Jay Leno.

But it wasn't just any old jean outfit; it was Saint Laurent, dah-ling, and probably cost the "Wrecking Ball" singer a pretty penny.

Looking happy with her more mature look, Miley flaunted her platinum blond pixie, which she styled into a modern-day pompadour and wore very little makeup, the better to let her natural beauty shine through.

And it wouldn't be Miley if she didn't have some choice words for another pop star: Justin Bieber. The MTV Unplugged performer told the late-night talk show host what advice she would give the trouble Canadian singer:

“Uh ... I would just say, you know, you got a lot of money. Pay people to make sure you don’t get in trouble," she said. "And party at your house. Buy a house, and add a club to it!”

Miley's not the only one who loves the Canadian Tuxedo:

Photo gallery Celebrities In Canadian Tuxedos See Gallery