07/22/2007 AT 01:40 PM EDT
is learning to dance the Tango – ankle bracelet and all – for a new movie role, PEOPLE has learned.
An official announcement is expected this week for Lohan to costar in the new romance Dare to Love Me,
sources close to the film confirm. It's the story of Tango legend Carlos Gardel, who was involved in a steamy romance with a prostitute, only to have his world shattered by a bullet that kills her and leaves him crippled with a fragment in his lung for life.
The movie is set in Buenos Aires in the 1920s and centers on Gardel and the mysterious woman.
No word on Lohan's exact role in the film, but sources say she began taking tango lessons Friday for an hour a day – all while wearing the alcohol-monitoring ankle bracelet she's had on her leg since emerging from rehab
on July 13.
The 21-year-old star – who faces charges
of driving under the influence and hit-and-run following a May car crash – had been scheduled to costar in the dark comedy Poor Things
with Shirley MacLaine, but that movie has been shelved.
Dare to Love Me,
which will be shot in Romania, is scheduled to be released next year with production expected to start in the fall.
A rep for Lohan was not immediately available for comment.