Kendall Jenner's style has gone from flirty and glamorous to sporty tomboy and back again. Now she's blending the two simultaneously as she test-drives TikTok's Office Siren trend. Last night, she wore a deep olive suit to the launch party for the world premiere of the Mercedes-Benz G-Class in Beverly Hills.

The monochrome set is masculine with broad, structured shoulders, yet feminine with a nipped-in waist, fusing the two ends of Jenner's wardrobe. Oversized lapels make the double-breasted blazer stylish and self-aware, paired with pleated pants that straddle the line between loose and fitted.

It is also a more tailored look than the style to which the star is accustomed. Jenner typically opts for slinky, slim-fit or baggy, relaxed styles. While her street style is littered with hints of business casual, from vintage suit dresses and trench coats to plaid skirts and jackets, last night's look was the truest example of her pivot to office readiness.

Dressed by longtime stylist Dani Michel, Jenner paired a blazer and slacks with chocolate brown leather flats and subtle earrings. Makeup and hair were kept simple with rosy lips, semi-smoky eyes, and shoulder-length hair.

Michelle has been dressing the girls (see: Haley Bieber, Ella Hosk) in blazers for the past few months. Bieber was recently photographed wearing an oversized Balenciaga black blazer. But the trend extends beyond Michelle's styling rack. [Suits and "office-core" attire are having a renaissance in womenswear. Beyonce introduced the business cowboy look last week, channeling a ranch-owning millionaire in a khaki Ferragamo suit and matching ten-gallon hat. Also last week, Zendaya transformed a vintage Ralph Lauren blazer into a mini-dress for a late-night show appearance, and Rihanna gave her workwear a David Byrne-esque twist with an ultra-baggy tailored jacket from "Stop Making Sense." And let's not forget Gigi Hadid. He wore not one, but two suit sets in one day.

Scroll through Jenner's look below.