Kristen Stewart Fears She'll 'Just Fail' at Hosting 'SNL,' But Has to 'Bite the Bullet'

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Kristen Stewart will make her hosting debut on Saturday Night Live this weekend, but admits that it took her six years to get up the nerve to agree to the gig.

"I've just been being a total wuss about it and then I finally was like, at some point, you just have to bite the bullet, you know?" the 26-year-old actress told Jimmy Fallon on Thursday's Tonight Show. "And just fail. It will make you stronger, man."

EXCLUSIVE: Kristen Stewart Opens Up About Feeling More 'Uninhibited' in the Public Eye, Has Twilight Reunion

She added of working on the iconic show, "It's been really, really fun.

Stewart was able to laugh at herself in the SNL promos she did with comedian Leslie Jones and musical guest Alessia Cara. When Jones asked the Personal Shopper star to "get excited" about hosting the show, she reacted with almost no emotion, making light of her sometimes too-cool persona.

WATCH: Kristen Stewart and Model Stella Maxwell Hold Hands During Theme Park Date

When ET caught up to Stewart in October at the 23rd Annual Elle Women In Hollywood Awards, she addressed how she's sometimes perceived by the public. "I know people love to say, 'Oh, she doesn't give a...' like, no, I totally do, man!" she exclaimed, adding that she's become more comfortable with her fame, years after her breakout role in Twilight. "So yeah, I think I just feel a little bit more uninhibited or something."