The 22-year-old actress - who is dating American student Will Adamovicz - decided to take up the raunchy hobby after one of her co-stars on new movie `The Bling Ring` recommended it for keeping fit.
A source told The Sun newspaper: "Like on all film sets, there`s often so much time spent doing nothing. One of the other actresses on the set has been pole-dancing as a sport for a while and Emma decided to give it a go as well. She`s amazed with the results because it has toned up her body so well.
"She never thought she would enjoy it but she finds it quite liberating."
This isn`t the first time Emma has shown interest in the saucy dance.
Last summer, following the New York premiere of `Harry Potter and the Deathly Hallows: Part 2` she partied at a pole-dancing club with pals.
A source said at the time: "She was really enjoying herself. There were a few scantily-clad girls around but Emma didn`t bat an eyelid.
"There are a few poles in the club but she didn`t have a go. After such a big night it`s no wonder she wanted to let her hair down.
"She had a smile on her face the whole time before calling it a night around 2am."