Celeste Solman/InStyle Jessica Biel revealed to InStyle that she's the rule enforcer in her home Biel shared that she was surprised at how good she is about setting boundaries The actress shares sons Silas and Phineas with husband Justin Timberlake Jessica Bielis embracing the fact that in her house, she might be the bad cop. The actress, 43, was interviewed byInStylefor their summer issue and was asked what surprised her the most about being a parent to her two sons,Silas, 10, and Phineas, 4, whom she shares with husbandJustin Timberlake. "The thing that surprised me about being a parent, and surprised me about myself is that I actually might be the rule enforcer," Biel told the outlet. "Sometimes. But it's not really my style." "I just sort of thought Justin's going to be the rule enforcer and that's the way it's gonna be," she continued. "I'm a Pisces, I'm more emotional, gentle easygoing and whatever, but I'm kind of good at it. I drop a boundary and I'm like, Nope. 'You can't cross it.' " Never miss a story — sign up forPEOPLE's free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories. Celeste Solman/InStyle Although Biel said it took her some time to learn that about herself, she noted that it's an "important skill." "And sometimes he can be really soft about things. Which I didn't expect!" Biel said of her musician husband Timberlake, 44. "We take turns, and I think that was surprising to me." In August 2024, Biel and her son Silas were photographed enjoying a tennis-filled day at the U.S. Open Tennis Championship. In the rare snaps, the mother-son duo could be seen analyzing a tennis match from the stands and walking through the venue hand-in-hand. The mom of two looked chic in her cream-colored Ralph Lauren pantsuit, white silk crop top, cream shoes, and, of course, a tennis necklace. Silas rocked a green and blue striped Ralph Lauren polo, khaki pants and blue Adidas sneakers. Celeste Solman/InStyle Last May, Biel shared that she's already started havingconversations with Silas about pubertyas a guest onSiriusXM's Let's Talk Off Camera with Kelly Ripa. "We talk a lot about that already," Biel said. "We're all, as parents, I think building it up in our brains as to how our children are gonna react and I do feel like we don't give them enough credit for just kind of being able to understand and absorb it and then move on." She continued, "We talk a lot about his body's changing a lot and he's experiencing that. He's experiencing growing pains. He has a hard time sleeping. He'll be waking up in the middle of the night. His legs hurt. His back hurts." Adding that her son has gone from a little guy to almost a preteen, Biel said that she and Timberlake have noticed that Silas has been growing a lot more. The PEOPLE Appis now available in the Apple App Store! Download it now for the most binge-worthy celeb content, exclusive video clips, astrology updates and more! "He's just growing. It's so amazing, so we talk a lot about that. We're talking deodorant. We're talking about hormones in our bodies and why we smell a different way, and so we're into it and we're on the precipice of all the big conversations I think." Read the original article onPeople