Lily - Vince Ruby Striped Ensign Sweater here

Robin: I'm pretty positive it's See by Chloe because of a similar style here

Robin's top: VPL
Lily's top: Parker here



Source: www.celebstyle.com
Episode still: www.legen-waitforit.com

Robin: Free People Stripe Tunic here

Lily: Marc by Marc Jacobs top here

Robin: L.A.M.B. sweater here on right but in the pattern shown on the left.
Screencap ermer00