Julianne Hough, Ellie Goulding, Cara Delevingne and other celebs tweet their hearts out.
Ellie Goulding's Half Marathon Shoes
Ellie Goulding ran a half marathon in metallic Nikes. “Excited to be in DC... Nike Women's Half Marathon. #letsturnitup,” tweeted the singer.
Joan Smalls Goes Short for Summer
“Hmmm...what do you think? #shorthair #summer #bold #instagreat,” tweeted Joan Smalls.