After a few weeks on the east coast filming Greta, Hilary Duff was back in Santa Monica this week. Monday was reserved for the spa with Haylie and Tuesday she hit the Pilates studio probably to work on those tight abs. Wonder if Hilary dished to her BFF sister all about her new hockey playing boy, or maybe they've got a teammate in mind for Haylie herself. The girls do like to double date. Hilary looks happy to be reunited with her sister back in LA, but she's also got a big old smile for that giant Mercedes Mike got her for her birthday.

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