January Jones, 45, reveals her toned figure in a black string bikini

January Jones, 45, shows off her toned figure in a black thong bikini as she relaxes in the backyard of her Los Angeles home

Hollywood siren January Jones is ready for the hot summer months.

The 45-year-old Mad Men star, who recently had her hair cut short, stunned fans with a revealing post on Friday in which she wore a playful black thong bikini by Marysia.

The star showed off her ample cleavage as she styled the fun suit with scalloped edges and strings. The low-riding slip is tied at the sides.

The looker added black cat-eye sunglasses and a gold chain with a large puffy gold heart pendant from Ivy Diamond Cole Jewelry. Her earrings were from DEMARSON New York.

She smiled confidently as a friend snapped away.

All she had in her caption was a black heart. Lisa Rinna from Real Housewives of Beverly Hills hit the like button.

On top form: Hollywood siren January Jones is ready for the hot summer months. The 45-year-old Mad Men star stunned fans with a revealing post on Friday in which she wore a playful black thong bikini

Jazz Hands: The star showed off her ample cleavage as she styled the fun suit with scalloped edges and strings.  The low-riding slip is tied at the sides

Jazz Hands: The star showed off her ample cleavage as she styled the fun suit with scalloped edges and strings. The low-riding slip is tied at the sides

The South Dakota native also wore the same suit in late April, but it was a pale cream color.

When she danced in the two part, she danced around on Ed Sheeran.

In 2022, she made headlines when she hit back to some “toxic” comments from trolls.

She wore a pale pink bikini to her post as she said she was having fun with her “toxic femininity.”

The comment was in response to a Post from Sept. 11, 2022 where she was wearing cut-off shorts, a trucker hat and holding a beer.

Haters said she was “toxic” because she looked like that. But she was just having fun with a certain style.

Details: The looker added black cat eye sunglasses and a gold chain with a large puffy gold heart pendant.  All she had in her caption was a black heart.  Lisa Rinna from Real Housewives of Beverly Hills hit the like button

Details: The looker added black cat eye sunglasses and a gold chain with a large puffy gold heart pendant. All she had in her caption was a black heart. Lisa Rinna from Real Housewives of Beverly Hills hit the like button

January often shared ironic messages.

And they seemed to love her slap.

A fan applauded her for being such an “engaging comedienne.”

Other fans were so enamored with her photo that they gushed, “You’re so beautiful.”

Meanwhile, other fans were eager to encourage January’s quirky side, replying, “Your NASCAR-esque adventures are the best part.” A-typical with a lot of personality.’

January shared an Instagram post in 2022 for a special tribute to her son Xander, who just celebrated his birthday.

Hot Mom: In 2022, she shared a picture where she looked amazing posing in a bikini top with high-waisted bikini bottoms from Bay 2 Swimwear

Hot Mom: In 2022, she shared a picture where she looked amazing posing in a bikini top with high-waisted bikini bottoms from Bay 2 Swimwear

She went to the countryside: She was knocked down for her Sept. 11, 2022 post, where she posed in shorts while modeling a trucker hat and holding a beer in front of a tractor.  Fans didn't seem to appreciate her country look

She went to the countryside: She was knocked down for her Sept. 11, 2022 post, where she posed in shorts while modeling a trucker hat and holding a beer in front of a tractor. Fans didn’t seem to appreciate her country look

My son is 11 years old. old today! I’ll be fine (obviously), with grace and reflection.”

The actress has kept the biological father’s identity private and is raising her son alone.

During an earlier interview with Red Magazine, the talented beauty explained, “I just don’t feel like I need a partner. Do I want one? Maybe. But I don’t feel unhappy or lonely. It would have to be someone so great I’d like to give way.”

“Someone who would add to my happiness and not take it away. I realize I have very high expectations and will probably have to compromise, but my life is so full,” she added.