If it was the shimmery shade that she was wearing in the later shows, it certainly looked like Benefit's "RSVP" (Champagne/Peachy Shimmer) (http://www.qvcuk.com/ukqic/qvcapp.aspx/app.detail/params.item.226871) - the Skinny Jeans is quite nice too.
Or, it could have been "My Date's My Brother"...