Lark told the cast from the start that her famous relative is her aunt. While we don't know much about Lark, Brittany receives a clue about Lark's identity after winning the first competition. The clue revealed that Lark's relative is an '80s runway model. During the fashion show in the fourth episode, Lark's clue is a pair of cutoff denim shorts.
In the seventh episode, Lark's clue during the estate sale is a huge poster of a magazine cover with what appears to be her model aunt on it. During the eighth episode, it's revealed that Lark's celebrity relative was in a tequila commercial with George Clooney.
During the ninth episode, Lark's celebrity relative is revealed to be Cindy Crawford. The challenge confirms that her relative's nickname is Cynthia, her career is a supermodel, the celebrity she dated was Richard Gere, and the TV show she appeared on was "House of Style." Pepper selects Lark during the Guess Off and correctly guesses her relative, leading her to be eliminated. "Cindy Crawford is my aunt, she's my mom's sister," Lark shares. "She's one of the most iconic supermodels of all time and I just feel lucky to have her in my life. And I'm lucky to have you guys in my life and for this experience."
Answer: Lark is Cindy Crawford's niece.
