First it was Reese Witherspoon. Then it was Ciara. And now, Kate Beckinsale is the latest celebrity to commit to the hair trend of the summer: the bob.

One day before her 46th birthday, the actress ditched her famous long brown hair for a much shorter—and lighter—’do. Beckinsale posted a photo of herself rocking a blunt blonde bob that falls just above her shoulders.

She wrote a caption that has nothing to do with her new hairdo, saying, “Any Americans in London wondering where the AC is, I’ve found it and I’ll be squatting over it for a couple of weeks, so you’ll just have to manage.”

The edgy, tousled style is a far stretch from her usual look, but she appears to be enjoying her new weather-appropriate hairdo.

Although we don’t know if the cut is for a movie or for pleasure, many believe it’s for Beckinsale’s upcoming film Jolt, starring Jai Courtney, Laverne Cox, Bobby Cannavale and Stanley Tucci.

Still, one question remains: Do blondes really have more fun?

RELATED: The Bob Is Summer’s ‘It’ Haircut...but It’s Not What You’re Thinking

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