Rihanna's Double-Wide Wardrobe!

Exploding star has to EXPAND CLOSETS to fit plus-size duds

RIHANNA can’t stop rounding out — and now she needs a second wardrobe for all the pounds she’s piled on! The National ENQUIRER learned the 29-year-old “Disturbia” diva is so distraught with her fluctuating flab, she had to build a collection of “skinny” and “fat” outfits to choose from, based on how she feels each day.

“Her weight can fluctuate by 10 pounds during any given week and that requires a massive wardrobe,” a source squealed to The ENQUIRER. “So she’s had to have home renovations in New York and L.A. to create closets the size of most people’s homes!”