January Jones slims down on juice diet which turns Betty Draper into a size six

By
Simon Cable
Last updated at 7:50 AM on 4th March 2011

As a slender size ten, she had to wear a girdle to match the hourglass curves of her Mad Men co-stars. 

But actress January Jones may need even more help fitting into Betty Draper’s clothes in the next series – after dropping two dress sizes on a strict juice diet.

The 33-year-old has shrunk to a tiny size six to take on the role of Emma Frost in the upcoming X-Men film. 

Shrinking: Mad Men star January Jones, seen here walking her dog in LA, has slimmed to a tiny size six for her role in X-Men: First Class

Healthy: January looking curvier as Betty Draper in hit US TV show Mad Men

She said her revealing costume for the movie was a ‘challenge’, adding: ‘In the comic it’s pretty much painted on and she has quite an unrealistic body.’

According to claims, the star lost weight on a restrictive regime of fresh juices and raw vegetables. Her slimmer figure attracted attention in January this year when she attended the Golden Globe Awards.

But it seems Jones is still happy to show off her shrinking physique, recently posing for a Versace advertising campaign wearing nothing but high heels and a strategically-placed handbag.

Designer Donatella Versace described her as ‘a perfect Versace woman for the 21st century’, adding: ‘She is chic and elegant but deeply sensual too.’

Lady in red: January at the Golden Globes this year, left, and in 2005, right

Model potential: The actress shows she’s not afraid to bare all in her advert for Versace