The 26-year-old star talked about the untitled project on popular talk show "Watch What Happens Live," reported AceShowbiz.
"It's about two sisters who go on a road trip to try to connect with their brother," Lawrence told host Andy Cohen before saying that she set her sights on Pratt to take the role of the brother in the project.
"That would be awesome," Cohen gushed about the idea. "In a dream world," Lawrence said.
Talking about when the movie would be out, Lawrence said, "The script is finished- we're both just trying to figure out our schedules."
While no plot details were revealed, Lawrence previously confirmed that her upcoming comedy film would be "funny," "dirty" and "real.