If you like Emma's blouse:
Marc by Marc Jacobs Kristi Tie Top - $278 (also available in blue)
(Thanks to Alice from Fashion of Glee for tipping me off to this ID!)
Forever 21 Sheer Spotted Top - $17.80
I'm not positive on Emma's skirt yet, but here are some nice possibilities/alternatives:
J.Crew No.2 Double Serge Pencil Skirt in Heathered Acorn - $120 (also in petite)
J. Crew No. 2 Pencil Skirt in Vintage Tweed - $148
Pair it with the J. Crew Skinny Glitter Belt - $28.50
And while we're at it...did you notice this?
Find me that green sweater!