Sudden Slimdown! Why Is Reese Witherspoon Losing Weight For A New TV Role?: Report

Summer is over and it’s time to get down to business! Reese Witherspoon is kicking it into high gear to get in shape for a new TV role and you’ll never guess whom her “thinspiration” is!

Star Magazine exclusively learned that Reese, 39, signed on to a new small screen series called Big Little Lies, modeled after the popular book by Liane Moriarty.

Her costar is ultra svelte Nicole Kidman and sharing the screen with Nicole has made Reese determined to lose weight!

“It’s been years since Reese was on TV, and she’s worried about how she’ll look in HD,” reveals a source.

The mom-of-three is looking to lose between 10-15 lbs. “She’s doubled her weekly yoga and cardio classes and is sticking to just 1,200 calories a day,” said the insider.