Elizabeth is wearing color-block paneled pants from the Chloé Resort 2013 collection with the Carol platform ballerinas from the Chloé winter 2012 collection.
You can find these pants and similar ones to shop online ; as well as ballet flats from the new collection. Everything is by Chloé.
at Net-a-porter
Paneled crepe tapered pants
/ Leather ballet flats
at My Theresa
CUFFED CROP TROUSERS
SILK TROUSERS
LEATHER BALLERINAS
LEATHER BALLERINAS WITH CRYSTAL BEAD EMBELLISHED STRAP
/ LEATHER BALLERINAS 
SQUARE TOE BALLERINAS
/ SQUARE TOE BALLERINAS 
at Stylebop
Black Leather Elastic Ankle Strap Flats
at farfetch
CHLOE tapered trouser
/ CHLOE tapered trouser
CHLOE relaxed wide leg trouser
/ CHLOE relaxed wide leg trouser
CHLOE ankle strap ballerina flat
/ CHLOE ankle strap ballet pump
(on sale)
CHLOE leather ballerina flat
/ CHLOE leather ballerina flat
CHLOE leather ballerina flat
/ CHLOE leather ballerina flat
