Who will fit into Disney’s glass slipper?With Cate Blanchett in negotiations to play the evil stepmother in the Mouse House’s live-action remake of “Cinderella,” the studio has begun narrowing its search for the classic fairy tale’s title character, sure to be a star-making role. The three foreign-born actresses who will soon be testing for director Mark Romanek are established Irish thesp Saoirse Ronan (“The Host”), up-and-coming Swedish thesp Alicia Vikander and Brit thesp Gabriella Wilde, who appeared in “The Three Musketeers” and just wrapped the role of Sue Snell in Sony/MGM’s “Carrie” remake. Chris Weitz (“About a Boy”) wrote the pic, which Aline Brosh McKenna (“The Devil Wears Prada”) sold to Disney as a pitch back in 2010. Simon Kinberg (“Elysium”) is producing the project, which Disney set up in May 2010 following the success of its live-action adaptation of “Alice in Wonderland.” Ronan has been in high demand since her breakout turn in 2007′s “Atonement.” Since then, Ronan has worked with top directors such as Peter Jackson and Joe Wright, and she’s due for another career boost when Open Road Films releases Andrew Niccol’s adaptation of Stephenie Meyer’s bestselling novel “The Host” on March 29. Scheduling could prove a problem for Ronan, as next year, she’s due to play the female lead in Wes Anderson’s “Grand Budapest Hotel” and she’s also attached to star in Working Title’s historical drama “Mary Queen of Scots.” She’s repped by CAA and Macfarlane Chard. Coincidentally, Ronan and Blanchett nearly worked together on Disney’s Snow White pic “Order of Seven” before that project was beaten to the starting line by Universal’s “Snow White and the Huntsman” and Relativity Media’s “Mirror Mirror.” Vikander was just named one of Variety’s 10 Actors to Watch on the strength of her performances in Wright’s “Anna Karenina” and Nikolaj Arcel’s “A Royal Affair,” which is Denmark’s entry in the foreign language Oscar race. Vikander also stars alongside Jeff Bridges and Julianne Moore in WB/Legendary’s big-budget fantasy pic “The Seventh Son.” In addition to “Carrie,” Wilde will soon be seen alongside Richard Dreyfuss and Thomas Dekker in the indie drama “Squatters.” Wilde is repped by ICM Partners and Tavistock Wood Management, the latter of which also reps Vikander along with UTA.