Holly Allen

Holly Allen is an American influencer, race queen, reality TV star, TikTok star, and YouTuber. She is best known for being the runner-up of Big Brother 21 (US), where she competed as Holly Katherine Allen. Born in Lander, Wyoming, she is 38 years old and has been active in the entertainment industry since 2017. With a slim build, brown hair, and blue eyes, she stands 5'5" and weighs 129 lbs.

Holly's time on Big Brother was marked by a showmance with Jackson Michie and a preexisting relationship with Kathryn Dunn, which was revealed on Day 44 by Jack Matthews. As an early member of the Gr8ful alliance, she stayed under the radar until bigger targets were evicted. Her competition wins and alliances with Cliff Hogg III and Nicole Anthony kept her safe until the final five, where Jackson saved her from eviction. After Jackson won the final Head of Household, he took her to the final two, but her subtle game fell short against Jackson's aggressive gameplay, and she finished in second place with 3 votes to win.

Outside of reality TV, Holly has built a substantial social media presence, with over 200,000 followers on Instagram, 454,600 on TikTok, and 15,200 on YouTube as of early 2025. She continues to engage with fans across these platforms, sharing aspects of her life and career. She is bisexual and has natural breasts. Her measurements are 33-25-34, and she wears a 32C bra size. She is active online and maintains a connection with her audience through her content.