In the new Life & Style, This Is Us star Chrissy Metz, who plays Kate, reveals her dream guest stars for This Is Us. Sylvester Stallone recently appeared as himself on the NBC drama and Chrissy hopes it isn’t the last bit of stunt casting her bosses try.

“I’m obsessed with Allison Janney. Can she be [my fiancé] Toby’s mom?” Chrissy suggested to Life & Style at the Rape Foundation’s Annual Brunch in Beverly Hills. Even though Allison is a seven-time Emmy winner, she isn’t the biggest guest star Chrissy, 37, is dreaming of. Chrissy hopes Barbra Streisand brings her talents to This Is Us. “Wouldn’t that be fun?" she gushes.

Getting Barbra sounds farfetched but the show is so successful that “when people are asking others to join us [as guest stars], there’s a lot of goodwill,” star Milo Ventimiglia, 40, who plays Jack, adds.

For more updates on This Is Us, pick up the latest issue of Life & Style magazine, on newsstands now!