Kendall and Kylie at the KIIS FM Event

Kendall and Kylie Jenner out with big brother Rob Kardashian at the KIIS FM 2010 Wango Tango Concert in L.A. on May 15.

Kendall wore a chic striped blazer with a denim skirt but added a young touch with her silver Mia boots (available on-line at kitson.com, costing $188.00).

Girly Kylie went for a little red and black romper, topped it with a blazer and worn with black ankle boots.

Pics from jjb.yuku.com