We all know about Gwen Stefani’s funky LAMB line and Beyonce's glitzy House of Dereon collection, so we decided to take a look at the latest round of celebrities who have thrown their hats into the design world.

First, there are the sister acts – Mary Kate and Ashley Olsen’s two new lines – the upscale The Row and the younger Elizabeth and James, Penelope and Monica Cruz’s line for Mango and, of course, the much hyped Twenty8Twelve from Sienna and Savannah Miller.