Last night Bob and Beth and Ali of Best Coast did “Each and Every Day” on Letterman in their best black and whites. Bethany wore high stacked (maybe we’re off but just guessing) Opening Ceremony or Rachel Comey wedges and had her hair in auburn waves like Loretta. CBS makeup vamped the mascara. On set she met Justin Bieber, another charismatic love song maker who loves and is loved by his fans, and also the man Christina Milian is most-after today. They made an Instagram! B’s bro-friend Nathan Williams of Wavves is currently opening for her on an American tour. You can stream the show they played last night at DC’s 9:30 Club from NPR here.