Azealia Banks performs onstage at the Firefly Music Festival at The Woodlands of Dover International Speedway on June 22, 2013 in Dover, Delaware

Azealia Banks performs onstage at the Firefly Music Festival at The Woodlands of Dover International Speedway on June 22, 2013 in Dover, Delaware

*Azealia Banks lashed out at Lily Allen on Twitter Thursday night, claiming the British singer has a drug habit and that her husband Sam Cooper looks like a “thumb.”

It all started when one of Azealia’s fans forwarded her one of Lily’s tongue-in-cheek tweets from April 2012. It read: ”YOURE ALL JUST JEALOUS CAUSE IM SOOOOOOOO F***ING BEAUTIFUL AND HAVE SUCH A PRETTY FACE.”

Azelia took offense to the comment, and tweeted: ”Weak. She can’t talk though. Not when I met her coked up at yoyo … And NOT with that ugly husband she has.”

Lily appeared to want to let the comment lie, until Azealia bit back, writing, “Your husband looks like a thumb.”

lily allen sam cooper

Lily Allen and Sam Cooper

The mention of Cooper – who wed Lily in June 2011 – unleashed the wrath of the 28-year-old singer, who slammed Azealia’s music.

Although the rapper is a force on underground mixtapes and popular in Europe, she has yet to release her first album.

Lily scoffed: ”Not even gonna @ her but if she wants to talk about weak , I’m sure her record sales to date should suffice. One hit wonder.

”And my husband ? Don’t go there b**ch Or your totally unnecessary security detail may actually have something to worry about #wannabe”

Azealia, 22, replied: ”LOL ill be a one hit wonder but you have ugly children and a coke habit….. Shhhhhhh. #SHUTUP.”

It all ended with Allen tweeting, “Ps we all need thumbs.”