Metro

$68,000 question: Really?

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What the frock?!

This flimsy, cheap-looking babydoll dress is the star of the new Saint Laurent collection — and costs a staggering $68,000.

The Peter Pan-collared, schoolgirl get-up, featuring a dowdy black bow tie and tiny puffy sleeves, was on display at the famed design house’s new Soho boutique until last week — when it actually sold!

Store workers yesterday wouldn’t say to whom.

The frock is part of a collection under eccentric French designer Hedi Slimane, the creative director for SL, who has dressed everyone from Brad Pitt to Madonna to Mick Jagger.

It’s even featured in a new ad campaign with top model Cara Delevingne.

Slimane’s collection has at least one D-list fan.

“I love it. It reminds me of Value Village,’’ crowed Courtney Love to the Web site The Fashion Law.

“I love that rich ladies are going to pay a fortune to look like we used to look when we had nothing . . . Hedi is a genius.’’