Apple Martin chose Vivienne Westwood for her college graduation. applemartin/instagram Apple Martin graduated college in style. “A bittersweet moment. How lucky we are to have these memories ❤️,” she captioned an Instagram post in celebration of her Vanderbilt University graduation. Beneath her cap and gown, Martin, 21, wore a white cotton Vivenne Westwood dress ($1,020) and black ballet flats with a small heel. The choice of designer seemed a perfect nod to her British roots as the daughter of Chris Martin and Gwyneth Paltrow was born in London and lived across the pond until her parents’ “conscious uncoupling” in 2014. The 21-year-old slipped into a white cotton dress by the British designer underneath her cap and gown. applemartin/instagram In an Instagram post, Martin shared pics posing with her besties from Vanderbilt University. applemartin/instagram Though not all graduates participate in the tradition, wearing white has long been a symbol of new beginnings.…