Last night at the launch of the Missoni for Havaianas collaboration, where Ashlee Simpson of course wore Missoni for Havaianas flip flops, we got to catch up with the singer-slash-designer, who is currently working on a tweed clothing line. First we got the lowdown on her personal style: "I dress for comfort a lot of the time. I have a daily lifestyle of being a mom; I know I'm going to be picking up a 42-pound child, so sometimes heels don't make sense," Ashlee told us. "As far as going out, I like to go with my feeling. I definitely love that mod kind of look right now." So what are some quintessential Ashlee Simpson pieces? "I'm definitely a flip flop person, ballet flats, a good pump, cutoff jean shorts, a good long skirt, and a few hippie dresses. And then you always need a good blazer." To shop Ashlee's must-have items, check out the widget below.