DUI HOUSEWIFE PRISON PANIC!

Real Housewives star Karen Huger thought she'd get a few months for her latest DUI offense, but the judge tossed her behind bars for a year, and sources say the high-maintenance glamour-puss is in a panic - scared stiff that she'll be the target of vicious street-thug inmates from day one!

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"She's terrified what will become of her," confides a snitch.

"She's a celebrity and quite rightly, she'll be singled out as a target. She's just a skinny, bony thing - how will she defend herself?"

On Feb. 26, the 61-year-old Real Housewives of Potomac star, who is worth $1.5 million, was sentenced to two years in the slammer, with one year suspended, at Maryland's Montgomery County Circuit Court.