Ex-98 Degrees Star -- Hired By Chippendales

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One of the founding members of 98 Degrees is joining up with the man-stripper crew at Chippendales in Las Vegas ... but no, it ain't Nick Lachey.

 

37-year-old Jeff Timmons has announced he'll don the legendary bow tie ... and not much else ... for a special 4-week run starting in May.

No word on how much $$$ Timmons is set to make for the deal ... but he'll probably get paid in singles.