Kate Hudson and Matthew Bellamy left baby Bing at home this morning and treated big brother Ryder Robinson to brunch in Brentwood. It was a makeup-free outing for Kate and her guys, but on Friday she caught up with her close friends during a girls' only lunch in Santa Monica. Matt's back at home with his fiancée, Ryder, and infant son following a co-headlining gig at Friday night's Lollapalooza festival in Chicago. Matt and his Muse band mates joined Chris Martin and Coldplay for an old-fashioned battle of the bands inside Grant Park. Concert goers were forced to choose between the two Brit bands, who rocked out simultaneously at opposite ends of the venue, Matt even acknowledged the Muse vs. Coldplay competition, saying, "We know you had options [tonight] . . . and you picked the right one." Muse moves to San Francisco on Saturday where they're headlining their next Summer music festival Outside Lands.