The Australian actress reveals she was given little notice about the revealing bathroom shoot, so she had no time to really shape up at the gym and instead decided to overhaul her diet.

Rose, who plays inmate Stella Carlin, tells Us Weekly, "I was given three days' notice. I got the script and was just like, 'Oh, God.' So I went to SoulCycle (indoor cycling class) and did a juice cleanse for three days."