Is "Fifty Shades of Grey" movie actress Dakota Johnson on a diet? Dakota Johnson, who plays Anastasia Steele, was spotted on set drinking organic juices and hitting the gym in Vancouver while filming "Fifty Shades of Grey." Is she trying to lose weight for her role in the movie?

According to E! News, 24-year-old Dakota Johnson was spotted on the set of "Fifty Shades of Grey" drinking organic, cold-pressed raw juice from The Juice Box, a Vancouver-based company. She and "Fifty Shades" movie director Sam Taylor-Johnson have been ordering juices from the store.

Dakota was drinking the Juice Box's Tumeric Tonic, which consists of organic turmeric, lemon, ginger, and organic raw wildflower honey, E! News reports.

The actress, who will portray Christian Grey's love interest Anastasia Steele in the movie, was also spotted leaving the gym in Vancouver yesterday, wearing a thick, heavy jacket over her workout clothes, Entertainmentwise reports. Looks like the daughter of actors Don Johnson and Melanie Griffith found some time between filming scenes to hit the gym.

Does Dakota's juicing and work outs suggest that she's on a diet and trying to lose weight for her role as Anastasia Steele?

"They order the organic cold-press juices. They love them. They have a standing order for them," the insider told E! News, adding that Dakota and Sam "are not doing a cleanse and are basically drinking a couple each day."

"This will be a tough movie to film. They have locations that are spread out and they will be filming for three months," the source continued. "They are sometimes starting as early as 6:30 a.m. and there are long hours. The juices help them feel great and maintain a high nutritional intake. They energize you and you don't get the same crash with sugar or coffee. It is a more sustainable energy level."

Looks like Taylor-Johnson and Dakota are staying hydrated and energized by drinking the juices and hitting the gym, all in order to shoot the highly-anticipated film based on E.L. James' bestselling trilogy, which is set to hit theaters on Feb. 13, 2015.