AJ Michalka has just scooped the lead role in new Disney film Secretariat and we can't wait to see it!

AJ Michalka (of Aly and AJ fame) just revealed on Twitter that she'll be starring in Disney's new racehorse movie Secretariat, based on a real-life story.

AJ is set to play Penny Chenery, owner of the racehorse Secretariat, who won the Triple Crown in 1973. 

AJ tweeted:  “I didn’t wanna announce this until I started filming, some of you already figured it out…I’m working on a film called Secretariat Xo AJ...

It’s a Walt Disney feature film with Diane Lane and John Malkovich. Diane & Dylan Walsh play my parents. Randall Wallace is directing! Xo AJ...

So excited about this movie, it’s a beautiful true story. Having an amazing time filming in Kentucky! Finally the news has arrived ha!Xo AJ.”

AJ is starring in new horror movie The Lovely Bones which is out in January, but we'll have to hold on for another year for Secretariat...booo!

Are you an AJ and Aly fan? Is AJ the best choice for the lead role?  Comments please!