Megan Fox In String Bikini Is An 'American Vixen' By A Tree

Megan Fox is proving popular as an old photo of her in a tiny bikini lands her an "American vixen" label. The 38-year-old actress, currently pregnant with her fourth child, was featured on a celebrity fan account on Instagram last weekend, and the user sharing the shot had a very apt caption. Mixing fairytale ethereal with sexy as she posed by a tree in her skimpy swimwear, Megan flaunted her bombshell figure in the teeniest of bathing suits, showing off her curves and reminding the camera of her muscles. Fans went wild in the comments, calling Megan "beautiful" and saying that they "absolutely love her."

Scroll for the photo. Posing outdoors, Megan leaned forward a little, standing by a tree trunk and surrounded by greenery and pouring sunlight.

The Transformers star stripped down to a plunging green bikini in glittery crochet, drawing the eye to her cleavage and taut abs. Going "patch-on" with her bottoms, Megan flaunted her killer hips and thighs, turning heads with her ripped torso while driving fans wild with her bosom. Angling her face upward and doing the same with her gaze, Megan sent out innocent vibes, posing with her hands stretched out behind her while wearing her hair down.

Mixing dark and blonde streaks and likely wearing extensions, Megan completed her wowing look with a hair-placed butterfly accessory, also sporting a full face of makeup. The girlfriend to Machine Gun Kelly wore matte foundation and blush, flaunting her full pout via a glossy lip while highlighting her blue eyes. In a caption, the user sharing the photo wrote: "An arty picture of American vixen and actress Megan Fox."

Talk right now is all about Megan's pregnancy, one making headlines earlier this month as the star shocked fans with her baby bump photo.

On November 11, Megan Fox broke her Instagram silence with the above photo. Kneeling on the floor and posing nude while covered in black paint, the Jennifer's Body star flaunted her blossoming bump, telling fans: "Nothing is ever really lost. Welcome back." Megan had made May headlines for wiping her feed clean as she turned 38, with the baby announcement post marking her first share since the big delete. The brunette is expecting her child with Ohio-born rapper MGK.

Sources close to Megan Fox are now reporting that she's happier than ever.

“Megan felt nervous early on in the pregnancy, but she feels more relaxed now. She's trying to enjoy it. She loves being pregnant," an insider told People.