Which celebrity brand ambassador partnership resulted in a reported 30% sales increase within the first year and is credited with revitalizing the brand's appeal to younger demographics?

Brand ambassadors are crucial in today's pop culture landscape, connecting products with audiences through influential personalities. The right celebrity partnership can transform a brand's identity and dramatically boost sales. This trivia question tests your knowledge about one of the most successful celebrity brand ambassador partnerships in recent pop culture history that redefined what such collaborations could achieve.

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Beyoncé's partnership with Pepsi
Rihanna's Fenty Beauty collaboration with LVMH
Taylor Swift's endorsement deal with Diet Coke
Dwayne 'The Rock' Johnson's Under Armour collection