Jessica Biel in Levi's at Au Fudge

When your father is the cofounder of William Rast and your mother is the hostess of a Levi’s party, you’re bound to be rolling deep in denim. Such is the fortune of Silas Timberlake, the 1-year-old son of Justin Timberlake and Jessica Biel. At the back-to-school shindig that Biel hosted with Estee Stanley at their kids’ restaurant Au Fudge for Levi’s on Wednesday, the actress explained why the durable jeans made by the 143-year-old San Francisco-based brand suit the tot.

“It’s casual and comfortable and easy to wear,” she said. “And I think that’s important. That’s important for my kid. I know some people feel differently. But my kid needs to be comfortable and able to rip holes in it, throw it in the mud and it needs to bounce back like new.”

Biel sought to expand the tyke’s wardrobe. When Stanley mentioned that she was ready to snap up an embroidered jacket and painted jeans in her size, Biel asked, “Can you get kids’ versions?” Other guests who increased their progeny’s pile of jeans at the afternoon event benefiting Baby2baby included Jennifer Meyer, Dania Ramirez, Kim Raver, Rebecca Gayheart Dane, Beverley Mitchell and Tia Mowry-Hardrict.

Although the tiny Timberlake doesn’t have a go-to outfit, Biel gives him a choice to pick this or that for what he wants to wear. “He’s cool,” she said. “I’m so out of what is cool. I feel so embarrassed. I don’t even know what I would buy right now.”

It’s a good thing that Stanley is her longtime stylist, dropping names of labels and designers that make some of the clothes in her closet.

“She loves The Row, she loves Dries sort of, sometimes. Zimmermann is a good choice for you,” Stanley said.

“I’ve been really into Zimmermann lately,” Biel affirmed.

“We love Gucci more than anything now obviously,” Stanley said.

With that, they dared to venture back inside the restaurant, where half the guests came up to their knees and painting on denim swatches was a popular activity. “It is a bit cute overload in there,” Biel said.