Clements twins

Ava and Leah began modeling at age seven after a children's boutique invited them to pose in new outfits. Their mother sent the resulting photographs to modeling contacts, leading to contracts with agencies in Orange County and Los Angeles.

The twins have modeled for brands including American Girl, Janie and Jack, Disney, Lands' End, Mattel, Old Navy, Claire's, Hurley, Nike, Skechers, Levi's, and Target. They have also appeared in Brazilian Harper's Bazaar, Italy's Vanity Fair, VÉG-A-PORTÉR, La Petite Magazine, Airfish, Petite Adele, and WWD Magazine.

The clementstwins Instagram account was launched in 2017 and became the twins' main public platform. Within a year of beginning their modeling careers, the account had gained more than half a million followers, reaching 1.5 million by December 2019 and nearly 2 million by August 2023.

The account had grown beyond 2.1 million followers by January 2025. Ava and Leah have also appeared on the family YouTube channel Clements Crew.

Ava and Leah co-founded KAVEAH, a teen fashion brand offering everyday essentials designed by teens for teens. The brand is associated with the twins' public work beyond modeling and social media.