This fall will welcome two more celebrity-spawned designer collaborations. First up is Alexa Chung's sartorial installation for Madewell, J. Crew's younger, lower-priced, ladies-only line. Chung's collection--chock-full of flirty dresses, Elaine-esque silk blouses and cuffed denim--premiered back at New York's FW10 fashion week in February. But its debut on Madewell's racks isn't slated until Fashion's Night Out (September 10th) at New York's upcoming SS11 fashion week. Ads for the collection (pictured here), however, are roaming the digital sphere. Meanwhile, Chung recently mused to Refinery 29 on her new gig, divulging her favorite piece: "I really like the black sheer shirt with polka dots...I love how graphic it is, and it's such an easy piece to throw on with jeans;" her fashion week essentials: "a camera... a good umbrella... [and] No stupid shoes! I'll definitely be wearing lots of flats;" and, her signature locks: "Oh, my hair always looks a bit rubbish, but I guess I'm always alternating between a very short bob and a very long bob."

Fellow Brit Emma Watson likewise will soon unveil her collection for People Tree. In fact, the newly pixie’d thespian just announced that “she will be launching her spring/summer 2010 collection for Fair Trade label, People Tree, at a garden party thrown by none other than HRH, Prince Charles,” says the Telegraph. Unlike Chung for Madewell, however, this collaboration marks the third collection from Watson for People Tree. The actress’ latest makes its debut via a runway show the day after Chung’s on September 11th in the Friary Court of St James’s Palace in London.