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The funeral company that arranged the services for Rihanna's late grandmother is suing the pop star. 

According to "TMZ," the company is claiming the singer still owes them money for the elaborate funeral she planned when her maternal grandmother Clara Brathwaite - who she affectionately called "Gran Gran Dolly" - passed away last June. 

Rihanna apparently racked up a bill of over $150,000 on several tents, exotic flowers and large multimedia screens for the celebration of her grandmother's life.  The funeral company says the star paid about a quarter of the sum, and refused to pay the rest, insisting she'd been overcharged. 

A rep for Rihanna is telling the site that the allegations are "completely false" and that her bill was paid "in full." 

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