On Thursday night, Jessica Biel made her first public appearance since welcoming her first child with husband Justin Timberlake, son Silas Randall, in April.

The 33-year-old actress was on hand to celebrate the latest collection of BARE, the eco-accessories line she helped launch in October 2013 with her brother Justin and designer Grason Ratowsky. Biel was gorgeous and glowing as she posed for photos with her handsome sibling at the event in Santa Monica, California.

The new mom gushed about her 4-month-old baby boy in an interview with E!, revealing the most magical moment of motherhood.

“Probably the moment he wakes up from a nap,” she said. “He’s sort of looking around and you sort of creep up and look over the crib and he looks up and he goes [big sighing sound]. Just a gummy mouth, no teeth, just a big smile, happy that you’re alive and you’re just looking at him. That’s probably the most magical … but you quickly move on from it because there is a dirty diaper in your palm,” she quipped.

Biel and Timberlake have stayed out of the public eye since welcoming their son, but did make an appearance at Taylor Swift’s final show in Los Angeles on Wednesday.

“It was super fun,” Biel told E!. “We are fans of music from all walks of the spectrum, from country to rock to R&B, to hip hop, whatever. I’ll pretty much see anyone live.”

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