We know. You already know all about the Billion Dollar Babes sample sale. That it’s the end-all, be-all of sample sales, held quarterly in New York, L.A., and London and making its Chicago debut on August 27.

We don’t need to tell you about the merch: designers you love (Rebecca Taylor, Tocca, Sass & Bide, Yaya, Samantha Treacy, and Salt Jeans, to name a few) at up to 80 percent off.

You’ve probably already R.S.V.P.’d (good girl) and plan to be there bright and early Saturday a.m.

But we bet you didn’t know that Friday there’s an invitation-only presale benefitting the Chicago Fashion Foundation. Now before you cry foul, we’ve got something you definitely do not know.  DailyCandy subscribers who use the link below to reply and register will be added to that exclusive list.

We know it’s two weeks away. We’re just giving you time to clear your calendar, clean out your closet, and stash some cash for your impending spree.

Not like you needed us to tell you that.

Billion Dollar Babes sample sale, Skylight Studio, 1956 West Grand Avenue, between Damen and Wolcott Avenues (323-933-8850 or billiondollarbabes.com). Private  sale: Friday, August 26, 5-8 p.m.; public sale: Saturday, August 27, 8 a.m.-6 p.m. R.S.V.P. required.