Congrats! I personally think it's not real but, you never know what her real signature looks like- her signature changes so much on all these succeses!
I'm sorry, but I also think it's secretarial, because it doesn't look like her signature. Neither her 'normal' signature, nor her rushed.
In Person Successes: Jennifer Lawrence, Josh Hutcherson, Kristen Stewart, Johnny Depp, Emma Watson, Daniel Radcliffe, Anne Hathaway, Shailene Woodley, Logan Lerman, Emma Stone, Andrew Garfield, Jamie Foxx, George Clooney, Benedict Cumberbatch, Orlando Bloom, Jennifer Connelly, Ray Winstone, Richard Armitage, Matt Damon, Bill Murray, Christoph Waltz, Jean Dujardin, Tilda Swinton, Saoirse Ronan, Ralph Fiennes, John Hurt, Jamie Campbell Bower, Eddie Redmayne, Sam Claflin, Jena Malone, James Franco, Robert Pattinson, Taylor Lautner, Douglas Booth, Kevin Zegers, Robert Sheehan, Tom Felton, Natalia Tena, Luke Evans, Ian Somerhalder, Paul Wesley, Torrey DeVitto, Nathaniel Buzolic, Sylvester McCoy, Evangeline Lilly, Jeffrey Wright, Willow Shields, Michelle Forbes, Alfie Allen, Finn Jones, James Cosmo, Daniel Gillies, Zach Roerig, Sara Canning, David Anders, Tom Payne, Daniel Portman, Jerry Bruckheimer, Nina Jacobson, Cassandra Clare & more.