A Question about Twirl Skirts

In all thier various forms, the twirl skirt seems to be the very foundation on which our little cottage boutique "industry" was built.  They're darling, you can embellish and decorate them to coordinate with anything and our little girls find them comfy and dizzy-ing-ly twirlable! (Sofie actually threw up last week in the middle of Joann Fabrics because she twirled so much in her new skirt....fun times....fun times...) What I'd like to know is, as a mommy, would you prefer to buy twirl skirts with shorts or bloomers built into the skirt so your little twirler isn't flashing everyone?  Or is your little one more of a leggings and twirl skirt type of gal?  I am debating for summer clothes, if leggings might be too hot for summer, and maybe I should switch to lighter weight fabrics instead? Hmmmmmm.....