See Jamie-Lynn Sigler and Cutter Dykstra's Official Wedding Portrait: 'I Feel Like a Princess'

Jamie-Lynn Sigler says her wedding dress has fairytale “princess” written all over it.

“I feel like Belle in this dress,” Sigler tells PEOPLE, recalling her time in Beauty and the Beast on Broadway.

The Sopranos alum wed her fiancé of nearly three years, pro baseball player Cutter Dykstra, on Saturday in Palm Springs, California.

In their first photo as bride and groom shared exclusively with PEOPLE, a tuxedo-clad Dykstra smiles along with Sigler in the glamorous gown and jewelry by Forevermark Diamonds.

“It’s Oscar de la Renta, a sweetheart, strapless, fitted, and then just kind of goes out,” Sigler tells PEOPLE. “It’s everything. … I didn’t go through designers or anything, I wanted it more for my mom, I wanted her to have that fun experience with me. It’s just simple and strapless.”

Sigler says that although she is in love with her dress, it’s not exactly the vision she had for the gown.

“I went shopping at a place in Long Island with my mom called The Wedding Salon. I walked in and the lady was like, ‘What are you looking for?’ Signer says. “And I was like, ‘I don’t want sweetheart, I don’t want ball gown’ and that’s exactly what I’m wearing. I feel like a princess in it.”

The two wed in front of more than 150 guests in a candlelit, desert chic wedding.

Singer Lance Bass, who is close friends with Sigler, officiated the wedding and the couple’s 2-year-old son, Beau, walked down the aisle in a miniature tuxedo while holding a baseball home plate that read “Here comes my mommy.”

“Jamie was glowing,” a guest told PEOPLE. “She looked breathtaking. She couldn’t be happier. You could feel the love.”