Teen star Emma Roberts just turned 20 and has decided to take an agent. David Sweeney of David Sweeney Management, who has repped her for 12 years, is organizing a series of meetings at the major tenpercenteries for Roberts, who is Eric Roberts’ daughter and Julia Roberts’ niece. But what an interesting TV/movie career she already has. Starting out as Johnny Depp’s daughter in the film Blow for the late (and great) Ted Demme, she became a big teen star on Nickelodeon’s Unfabulous. That led to starring roles for her in Warner Bros.’ Nancy Drew and DreamWorks’ Hotel For Dogs. She’s co-starring in Scream 4 in theaters this April and also starred in Homework, the Sundance film that sold to Fox Seachlight for a June 17 release. Already, she’s been on the covers of Vanity Fair, Teen Vogue (twice) and of course Seventeen. As for an agency, she and Sweeney are looking for reps who’ll help groom her to be a serious actress, aka “the next Natalie Portman.”