Lady Gaga, Rihanna, Adele, there are oodles of ladies all over the Billboard Hot 100, holding six of the top 10 spots this week. But something is missing. Where are the original crafters of girl power? Where are the girl groups? I don't want to imagine what my life would be like today without the insight of The Spice Girls, TLC, and Destiny's Child, but, if I force myself to, all I see is darkness and a severe lack of dance moves. Girl groups have been showcasing the talent and sass females have for over six decades, and we certainly can't stop now. In case you forgot the majestic music that ladies can make when they get together, we complied 15 girl group wonders to rock some sense back into you. Don't forget to increase girl group awareness by adding your own favorites in the comments.