Lindsay Lohan Looks Like ... a Normal Person

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Rehab does a body good ... as evidenced by this picture of Lindsay Lohan looking less like a blowfish and more like a completely regular human.

The pic was snapped Saturday in L.A. while LiLo was out shopping with sister Ali. Photogs almost missed the shot ... mistaking her for a happy, healthy girl ... then realized it was in fact the rehabbed starlet.