Nicki tweeted a "family photo" of her and the Smiths (including Jaden) from the set of the video, which was shot over the weekend. "I'm the newest member of the family! Lmaoooooo," she wrote with the pic. "How cute are they barbz???? Willow goin ham in the video."
While Willow is known for her risk-taking style, her outfit looked tame next to Nicki's. The 'Super Bass' rapper was rocking a bright-colored dress made of stuffed animals.
Willow has said that she's "grateful" to have Nicki on her song, which will be featured on her as-yet-untitled debut album. 'Fireball' comes after the release of the L.A. native's infectious first single, 'Whip My Hair,' and its confident follow-up, '21st Century Girl.' Expect to see the new music video in the coming weeks.