When a group of women with voices come together, there is no stopping them. At least that’s what pop history has taught us. It all started in the ’60s when girl groups began to take over the charts. Women’s lib was on the rise and girl groups were challenging the perception of female singers as instruments for an industry that consisted of mostly male composers and producers. The girl group phenom also gave female figures in music a strength-in-numbers type of mentality. These teams of musical mavens also made people rethink their fashion choices and often gave listeners a reason to reconsider their ideas about love, society and equality. Many women in these quintets, trios, sextets and quartets were among the first artists to test out and usher in looks and trends that hadn’t been seen before. To celebrate the epic impact that girl groups have made on society, here are some of the most stylish envelope-pushing pop teams in history.