Fashionistas and fans alike are buzzing about Mary-Kate and Ashley Olsen’s new book Influence, filled with photos and essays on the twins. And now, you can not only buy the tome but you can meet the stylish siblings in person by going to one of their book signings. In their blog, Ashley alerts her fans that they’ll be in stores in N.Y.C. and Los Angeles in the next few weeks for in-person signings. So if you are in N.Y.C on Tuesday October 28, swing by the Barnes and Noble at Union Square at 12:30 pm. But if you’re in Los Angeles, you’ll have to wait until November 12 to see Mary-Kate and Ashley at the Borders in Westwood at 7 pm. And if you can’t make it in person, you can still pick up the coffee table book at amazon.com, $24, now.