The 27-year-old 'Summertime Sadness' hitmaker hit back at rumours she was paid up to USD 2.8 million to perform three tracks at the couple's lavish party on the eve of their wedding in Florence, Italy, reported TMZ online.
"I would never let a friend pay me to sing at a wedding, that would be crazy," she said.
Asked how much she would charge to sing at a normal wedding, she said, "I'll do it for free like I did this one."
The couple asked the star to entertain their guests after Kanye, 36, hired an orchestra to perform her hit 'Young and Beautiful' when he proposed to the 'Keeping Up with the Kardashians' star at AT&T Park in San Francisco on her 33rd birthday last October.
The couple also hired Andrea Bocelli to sing at their wedding ceremony and John Legend performed at their reception.