January Jones has one of the best swimwear collections we've seen and her latest swimsuit might just be her best one yet.
The Mad Men star looked phenomenal rocking a plunging green polka dot one-piece by Shani Shemer in a stunning sun-soaked photo on Instagram.
MORE: January Jones and Christina Henricks twin in figure-hugging dresses for Mad Men reunion
January wowed her fans in the retro design, which features puffed sleeves, fixed bow detailing to highlight the waist, and a high-cut leg.
WATCH: January Jones slides into her incredible living room
The actress accessorised with a leopard print headscarf and cat-eye sunglasses as she posed near her swimming pool at her gorgeous home.
Fans were quick to compliment January on another show-stopping appearance, with one writing: "January, you are stunningly beautiful and look like you'd be a fun person."
A second gushed: "The hottest gal on Instagram!" A third added: "Slaying every outfit as usual."
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January looked gorgeous in her retro swimsuit
January often shares her swimwear photos with fans; last month, she looked gorgeous in a coral two-piece with high-waisted bottoms and a one-shouldered top.
Her toned abs were on display, and she simply captioned the snapshots: "Friday. Go get wet."
January's famous friends rushed to comment with Charlize Theron writing: "Wow," and actress, Willow Shields, adding a string of on-fire emojis.
The star's other social media followers mirrored the celebrity statements and added: "That color looks good on you," and "that suit".
January often stuns with her extensive swimwear collection
Just a few months ago, she posed in nothing more than a pair of high-waisted pink flares, sunglasses and a necklace as she declared: "Can't find a top to do these trousers justice so."
January protected her modesty with a carefully placed arm in the photo taken in her bathroom.
Her fans were shocked by her bold choice of outfit and wrote: "You know those trousers do you just fine," and "OMG," while others loved her vintage accessories and applauded her brazen look.
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