Ariana Grande Falls on Stage While Performing in Toronto [Video]

Pop singer Adriana Grande took quite the tumble on Sunday night, completely falling down in the middle of the stage while singing her chart-topping song, "Bang Bang."

She was performing for a packed crowd at Toronto's Air Canada Centre wearing a short black miniskirt, thigh-high stockings and a pair of super tall heels when the mishap occurred.

Ever the professional, Grande rolled with the punches, dusted herself off and resumed singing on bended knee before popping up and resuming her choreography. She completed the rest of show flawlessly, performing songs from her first album Yours Truly and her latest, My Everything.

A source told ET! Online that Grande "was sick and had a sinus infection, but is fine now."

After the show, Grande tweeted thanks to Toronto for being supportive, despite her mid-show missteps.

"Thank u Toronto!! Tonight was such a fun show lol" she wrote. "Y'all made me feel so much better! I love you & thank you so much."

thank u toronto!!!! tonight was such a fun show lol. y'all made me feel so much better! i love you & thank you so much.

— Ariana Grande (@ArianaGrande) March 9, 2015

Even thought she's a pro at dancing in tall heels, Grande has admitted in the past that the feat is no walk in the park.

"Dancing in high heels is kind of tough," she admitted to Glamour in September 2013 about her signature style. "I learn the dances without the heels, and then we add them. We just practice, and I get used to it. My feet hurt really badly at the end of the shows, but it's fun. While it's happening it's fun. I feel tall."

It's also a good workout, she claims.

"Nothing burns more calories than dancing in 5-inch heels," she told Shape in 2012. "Try it!"

On a brighter note, Grande has now joined the ranks of the pop stars before her who've also taken some pretty public on-stage tumbles, like Beyoncé and Madonna -- not bad company!