January Jones caused quite a stir on Instagram on Monday! The 43-year-old actress shared a risqué snapshot with her fans which showcased her slender and toned figure - and fans could not get enough.The glamorous black and white image shows January in the bathtub with her wet hair slicked back and wearing full makeup - but nothing else.MORE: January Jones reveals toned figure in bikini photo - but confuses fans WATCH: January Jones slides into her incredible living room at LA homeShe can be seen