Last Big Role: Parker, Sex and the City; Hudson, Something Borrowed
Why They're Buzzy: Glee is famous for its celebrity guest stars, and these two names are some of the biggest the show has seen since Gwyneth Paltrow. Hudson plays Cassandra July, Rachel's (Lea Michele) college dance teacher, who makes meany Maks Chmerkovskiy from Dancing With the Stars look like a teddy bear by comparison. Parker will debut later this season as Isabelle Klempt, a fashionista who becomes a mentor to Kurt (Chris Colfer). For the stylish star — and red carpet fave — the role should fit like a glove. —Erin Strecker