Swimsuit model Kate Upton exposes major cleavage in button-down shirt: 'Bombshell vibes'

Known for gracing numerous magazine covers, swimsuit model Kate Upton has set pulses racing with her latest Instagram upload.

Decked in a button down shirt, the American model-turned-actress transforms into a retro queen for the new picture, flaunting her ample curves and smouldering looks.

So much so that, with her towering hairstyle and deep smokey eyes, the glamorous shot evoked memories of yesteryear diva Brigitte Bardot.

"Feeling some Brigitte Bardot," one of her fans admiringly wrote, while another took a more creative route, drawing parallels with other popular faces in showbiz with the comment, "You're like a mix of @realbarbarapalvin and @marilynmonroe."

In the image, Upton leaves little to the imagination in her racy shirt, whose top buttons seem to have been left undone for sex appeal.

In addition, the 25-year-old evoked some serious "bombshell vibes" with her fingers poised close to her lips while she smouldered into the camera lens.

As soon as the fiancee of baseball star Justin Verlander shared the sizzling photo on Instagram, her fans and followers bombarded the comments section with gushing messages.

One enthused user wrote, "Most beautiful women in the world... Those eyes are killing me."

"1960's bombshell vibe!" another follower commented, while a third urged the Bond makers to cast Upton. "They need to remake the Bond movie with Ursula Andress... Kate in the lead," the comment read.

"Love the look! The hair is fabulous," said someone else.

Apart from her stunning Instagram uploads, the actress has been in the news for her sizzling looks in the trailer of her new movie The Layover.

Starring in the role of Meg, the best friend to Baywatch babe Alexandra Daddario, it looks like Upton's fans are in for quite the visual feast as the two beauties engage in a swimsuit face-off in the film that releases this August.