There are plenty of new trends to try this Summer, but our favorite outfits to shimmy into on a sweltering hot day? Those are typically made up of the classics: shorts and a tee, breezy rompers, and, of course, a classic shirtdress [1] — which even has Princess Charlene's stamp of approval.

The Monaco royal stepped out in a midlength, short-sleeved blue number — which included buttons down the front and a waist-cinching belt — during the Saint-Jean celebrations. It was easy but elegant, reminding us that this figure-flattering staple looks good on everybody, creating a chic and modest look that works for any occasion.

Scroll through to see Charlene's breezy look. Then, shop a similar piece for yourself.

Charlene Looked Chic and Polished in a Classic Blue Shirtdress

She Kept Her Look Simple, Pairing the Piece With Statement Earrings