Yet another day, and Billie effortlessly slays in another fabulous outfit. 

The singer graced the launch event of the sustainable bodycare brand CYKLAR in Los Angeles, infusing her unique style into workwear attire. Billie looked incredibly cute and cool sporting a corseted white pinstripe shirt paired with midi denim culottes, sheer tights, and stylish Gucci loafers.

However, the standout element of her outfit? Undoubtedly, that oversized waistcoat. Just when we thought the tailored top trend had bid farewell with the end of summer, Billie makes a bold statement, declaring that waistcoats are back and should be a year-round style staple.

 The only rule, it appears, is to opt for something decidedly more XXL, suggesting that any trend allowing room for those delightful Christmas canapés is more than welcome!