We fell hard for Sophia Grace, like the rest of the world, when she showed off her rapping skills on Ellen back in 2011 with a masterful cover of Nicki Minaj's "Superbass." As these things go, Sophia Grace has launched her own singing career, and now we have the video for her totally-DJ-Mustard-sounding anthem, "Best Friends." It's amazing. The single is all about being there for your girls, feeling great and supporting your crew. It's so good that we're willing to overlook the heavy product placement for her new line of clothes at K-Mart. (Do you think Nicki helped broker the deal?) Our only question is: Where is Rosie? For a song that's all about sticking with your crew, the only glimpse we get of Sophia Grace's listless, mute, counterpart is her image in a K-Mart ad at the 1:17 mark. Regardless, we are all in. Sophia Grace runs this town all night long.