Nicki Minaj has pumped up her feud with Mariah Carey after taking aim at her fellow American Idol judge in a series of tweets after the two divas were seen squabbling on the talent show on Wednesday night (01May13).

The pop pair traded jabs over career success while the remaining four contestants on the show were performing, and Minaj wasn't about to let the matter go on Thursday (02May13), as she took to to subtly attack Carey.

In a series of posts addressed to blogger Perez Hilton, she wrote, "Shes (sic) sad i tied her record for Hot 100 entries in only 3 years of being in the game. Yep, a black female rapper.

"What u Should be doing (wit your messy a**) is asking why a woman So successful at her age, is still so Insecure, and bitter."

And she closed out her latest Twitter attack on Carey by hinting that reports suggesting Jennifer Lopez is being lined up to return to the talent show and replace Carey are true, adding, "All dem #1s but JLo phone ringin...? I guess having a personality, being a secure woman, and giving genuine critique still trumps that."

Carey and Minaj have been at war ever since they first became fellow judges on the show - they fell out during an early audition round.