Proving that she'll always be a style queen, Kate donned a sleek black blazer dress fitted at the waist ... covering ...

Like Kate, Sophie is a devoted fan of Beulah, boasting a collection of four dresses, including three variations of the ...

A heavy, plaid blazer, a tee, and some jeans will give you a studious vibe in the best way. Consider accessorizing with vinyl-style shoes (like mules!), a structured bag, and a gigantic scrunchie.