It’s that time again. For one day only, local fashion favorite Society for Rational Dress is closing out gear from spring and summer 2010 at up to 75 percent off original retail.

Expect an offering of designer Corinne Grassini’s tissue-thin T-shirts starting at $30, covetable leather skirts between $80 and $150 and belts as low as $30.

And though we’re about to be deep in-between seasons, now is a good time to stock up at this sale:  The typically muted color palette of Grassini’s pieces make even her most summery of gear a seamless fit for fall.

Society for Rational Dress Sample Sale. Saturday, August 21st. 10 a.m. to 4 p.m.  255 South Santa Fe Avenue, #100. Los Angeles. societyforrationaldress.com

Photo: A cool leather skirt and jacket combo from Society for Rational Dress’ summer 2010 collection.