Jennifer Aniston Supports Boyfriend Jim Curtis At His Book Event

Jennifer Aniston proved she’s all in on her new romance with boyfriend Jim Curtis.

The actress dropped by his sold-out "A Deep Reset for the New Year" book event at the bookstore Godmothers in Summerland, CA Saturday, rocking grey roots, a green sweater, and jeans like casual-cool royalty.

Fans who spent $111 a ticket got more than just Curtis' hypnotic skills ... they also got a glimpse of Jerry Seinfeld, Portia De Rossi, and Netflix boss Ted Sarandos.

Jenn and Jim went public with their relationship over the summer after they were spotted on a yacht in Spain in July. They went IG official in early November when the "Friends" alum posted an adorable black-and-white photo of herself hugging her beau from behind to wish him a happy birthday.

The couple made their first public appearance together at ELLE's Women in Hollywood event in November.