She's known for living a fast lifestyle, but the endless partying and working has now worried friends of model Cara Delevingne, who are reportedly worried she's getting out of control.

Cara Delevingne 'Not Settling Down' Anytime Soon?

According to The Independent, the model's recent behaviors at a series of events have sparked concern for her well-being.

Her arrival in London earlier this month for the GQ Men of the Year Awards, her behaviors at the airport-two weeks after she allegedly tried to kick photographers in New York-was the first sign that something may have been going on with her.

Cara Delevingne Reuniting With Michelle Rodriguez?

Despite having fun and cartwheeling through arrivals at London's Heathrow airport, the model reportedly didn't take very kindly to seeing photographers there-and allegedly lunged at them and didn't seem happy to see their presence.

"Normally Cara's up for being pictured-even posing," one photographer said. "But this time she was really weird-shouting, pushing, screaming. I think she was drunk."

And after her now famous tumble at the awards-where a hug with fashion designer Jonathon Saunders wound up with both of them lying on the floor-friends have become concerned that her constant travelling for work, and her love of partying, have taken too much of a toll on her now.

"She runs in a fast circle," a friend said. "But lately, it seems to have caught up with her. At the GQ Awards, because everyone else was being so well-behaved, Cara seemed extra out of control."

And while every appearance wasn't worrisome recently, with the model appearing to be much more graceful at the Toronto International Film Festival for the premiere of her movie The Face of an Angel, her friends are worrying that her acting aspirations will suffer if she doesn't get things back under control.

"Cara's always the last to leave the party. She's a wild child and proud of it," the friend added. "Everyone just hopes that her partying doesn't derail her movie career before it gets started."