Gwen Stefani packed up her boys and took them to the park, on Sunday, for some fun time. The Voice coach snapped a pic of son Kingston holding baby Apollo in front of the slide -- SO cute!

Gwen and Gavin both showed off their drop-crotch style, with Gwen in denim with a grey striped sweater and high-top Adidas and Gavin in some serious cotton harem pants. Are they the most fashionable family in Hollywood, or what?!

Gwen's having a good week, with her new single "Baby Don't Lie" joining Billboard's Hot 100 at #46. It's the first time since 2007 that Stefani's made the chart for a solo effort.

Meanwhile, over at The Voice, the gang's still in Knockout Rounds. On last week's show, Gwen "stole" talent Ricky Manning after his performance of Miley Cyrus' "Wrecking Ball," declaring, "I think I might have just won The Voice!" Check out the show this week to see what happens next!