Paris Hilton Powder-Laced SUV -- It's NOT Cocaine

Paris Hilton was in the middle of a shopping frenzy the day after XMAS, when a nose-y photographer snapped a pic of the interior of her hybrid Yukon SUV ... which was partially covered with a suspicious looking white powder -- but don't jump to conclusions, because it's NOT cocaine.

We contacted Paris, who scoffed at the intimation it was blow. She immediately sent us her own pic of the SUV's interior, which she says clearly shows it's a foundation from her makeup kit.