Alaina Beaton, lead singer of Porcelain and the Tramps/Porcelain Black DM'd me through their Porcelain Black twitter when I asked how she was so skinny. Her response was unearthly amount of coffees, cigs, and lotsa singing in the studio lol.
Kyle from FTSK did when I first followed him years ago and Boys Like Girls DM'd me because I
won their contest in like 2010ish if that even counts haha. That's all the DMs from celebrities
I've gotten I think but I have gotten a few tweets and follows