She’s one hot mama! Jennifer Garner looked amazing in a black sequined gown on the carpet at the American Ballet Theatre’s Annual Holiday Benefit in Beverly Hills, CA. The 13 Going on 30 actress was glowing and it looks like she has her boyfriend, John Miller, to thank for that. A source told In Touch that “her relationship with John is like a dream.” Aw! Scroll through to see all the pictures of Jen on her night out.