Every fashion girl's worst nightmare is realizing you packed the wrong sneaker trend for 10,000-step days on vacation. It's happened to me in New York City, Boston, and even Alaska. I envy Selena Gomez 's smart move before her trip to London . She chose an ultra-supportive take on the white sneakers trend —for just $150 at Cole Haan. Yes, Gomez crossed the pond to shoot Season 6 of Only Murders In the Building , but her filming schedule encourages plenty of tourist time. She and her friends picked the perfect spot—and street style looks—for an impromptu Instagram photoshoot. Gomez posed in front of Big Ben in a little white dress from For Love & Lemons, which matched Cole Haan's GrandPrø Tennis 2.0 Sneakers. Selena Gomez grabbed photos with her friends, but her $150 white sneakers stole the show. (Image credit: @vanessa_tara) In the midst of a Hollywood-wide ballet sneaker takeover, Gomez's trainers stood out for being somewhere in between slim and chunky.…