January Jones Rocks Chic String Swimsuit in Instagram Snap.

Actress January Jones flaunted her toned abs and legs in a chic black string swimsuit on Instagram, revealing that she enjoys doing Lagree Pilates to stay fit. Jones also shared that she starts her day with celery juice and takes vitamins, but is not overly strict with her diet. The Mad Men alum previously resisted working out, but now enjoys the competition and motivation from working out with others.