Who's the coolest mom in music?

Beyoncé might be looking to make Blue Ivy a big sister, but iHeartRadio listeners think Gwen Stefani is music's coolest mom.

In a recent survey, the 43-year-old No Doubt singer pulled 30.4% of the vote, followed by Sheryl Crow with 20.4%. Beyoncé ranked third.

Stefani and husband Gavin Rossdale have two sons: Kingston, who turns 7 on Sunday, and Zuma, 4.

"It's superfun being a mom, but it's hard too," Stefani told Harper's Bazaar last year. "Finding that balance between work and family is the hardest thing I've ever done — by far."

Here were the top vote-getters in the iHeartRadio survey:

1. Gwen Stefani (30.4%)
2. Sheryl Crow (20.4%)
3. Beyoncé (17.4%)
4. Shakira (12.4%)
5. Christina Aguilera (8.8%)
6. Madonna (6.4%)
7. Britney Spears (4.1%)

Other recent iHeartRadio surveys named Will Ferrell the funniest person in the country right now and Lady Antebellum's Golden the May album release most anticipated by listeners.