Sandra Bullock has signed on to star in and produce an untitled Warner Bros. drama penned by writers Pamela Falk and Michael Ellis, who are writing the script, directed by Anne Fletcher, whose Sandra Bullock starrer The Proposal grossed $317 million worldwide last year.

According to Variety, the details of the story were sparse, though it's said to combine elements of An Unmarried Woman and Saturday Night Fever.

Sandra Bullock is also considering taking lead roles in two other Warner Bros. projects -- Alfonso Cuarón's space adventure Gravity; and post-9/11 drama Extremely Loud and Incredibly Close.

No production date has been set.