Yee haw!

A video posted by Carrie Underwood (@carrieunderwood) on

Everything but the boots! Carrie Underwood let loose after co-hosting the 2015 Country Music Association Awards on Wednesday, Nov. 4. The American Idol alum kicked off her heels and jumped on a mechanical bull for a good ol' time.

PHOTOS: Stars gone country

"Yee haw!" Underwood, 32, captioned the hilarious Instagram video. The "Smoke Break" singer — mom to 8-month-old son Isaiah — kept a tight grip on the bull with one hand while waving a fake gun in the other. She wore a short black dress, rocked a red cowboy hat, and went barefoot.

Keeping the party going, she also threw on a fake mustache, which she showed off in a separate post. "I mustache you another question: do you like my hat?" she captioned a selfie via Twitter. "Yes?!?! Woo hooo!!!"

Underwood co-hosted the star-studded show with Brad Paisley at Nashville's Bridgestone Arena. During the event, the longtime pals cracked jokes about Blake Shelton and Miranda Lambert's split and teased performer Justin Timberlake about his Saturday Night Live hit "Dick in a Box" — without actually saying the song's title. After the show, Underwood, who had 12 wardrobe changes throughout the night, shared a hilarious text via Twitter that she received from her mom about Timberlake's provocative tune.

"I liked the opening but I'm sorry to say I don't know the Justin Timberlake song you were talking about," her mom wrote. Underwood captioned the screenshot: "My mom sent me this text…so cute! Love you, Mom!"

Watch Underwood's mechanical bull ride in the video above!

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