Jamie-Lynn Sigler is praising her positive mom group experience as the drama surrounding Ashley Tisdale's former "village" continues to make headlines. "My mom groups are everything," Sigler, 44, told Us Weekly exclusively. "My mom friends have gotten me through so many things." The actress added, "I think the most important thing for a mom group is honesty and transparency. I think I learned to do that most with these moms, of just being open and honest about the hardships of motherhood." Celebrity mom groups have been making headlines as of late after Tisdale, 40, wrote an essay for The Cut earlier this month about experiencing a level of toxicity in her circle of friends. Breaking Down Ashley Tisdale's Mom Group Drama: A Complete Timeline Sigler, meanwhile, told Us she's "only had beautiful and lovely experiences" with her mom groups. The Sopranos alum shares sons Beau, 12, and Jack, 7, with husband Cutter Dykstra and isn't shy about discussing her two boys publicly. She even offered Us an update on her eldest son, Beau, after he experienced a major health scare in 2024. "He's my hero. He's amazing. He is just a light. He wants to spread his light and love all the time," she gushed. "He's going to do great things. I don't know what they are, but I'm just so proud of him every day." Novartis Aside from her role as a mom, Sigler is gearing up to make her TV return as Dr. Laura Kaplan on Grey's Anatomy during the ABC show's new Thursday, January 15, episode. Just like Sigler, her character has multiple sclerosis. "To say the words, 'I have MS,' on screen. The first time I did it, I teared up and needed a minute because I thought this was going to be the thing that took away from my acting career. I thought this was a thing that was going to mean that my dreams couldn't come true," Sigler told Us. So to be on screen and be able to say these words just felt so much bigger than me." As Sigler continues to navigate her MS journey, she's teamed up with Novartis to "create resources" for others living with the disease, "especially those that are newly diagnosed." Sigler told Us that they "created a treatment guide" as a way to help people "process what's about to happen." The actress reflected on receiving her own MS diagnosis, explaining that she was "so overwhelmed" by the realities of how her life was going to change. Ned Fulmer, Christina Applegate and More Stars Battling Multiple Sclerosis Their goal was to "give them some sort of resource to say, here's some power back in your hands. Here are the questions to ask," she explained. "You can find your voice," Sigler was also open with Us about her decision to take Kesimpta for her relapsing MS. After three starter doses, the actress takes the medication once a month - something she's able to do on the go. "I'm actually waiting for a call today if I get a job or not. I'll be in whatever state it is next week, and my treatment's due next week, so I can take it with me," Sigler said, noting that just like with anything there are risks with taking Kesimpta. Sigler urges the MS community to "ask your doctor" so they "feel empowered," especially if this medication is right for them. "The main thing I want to give the MS community is confidence and power, and not let their MS define them or allow them to feel like they are incapable or weak," Sigler continued. "You have to find a new way."