Jennifer Lopez recently slammed plastic surgery rumors after a British surgeon posted "before" and "after" photos of the singer that suggested she had work done. 

Dr. Ayham Ai-Ayoubi, who identifies himself as a "facial and laser surgeon" made headlines on Monday when he tweeted the pictures and wrote that Lopez is "naturally pretty, but now looks amazing." (See photos here:)

According to his tweet, the doctor indicated that the American Idol judge's face shows "many signs of #plasticsurgery."

Lopez took to Twitter Monday to deny Dr. Ayoubi's claims, saying that she has yet to go under the knife. 

"@DrAyoubi Sorry Sir, but I have never had plastic surgery of any kind. #fact," she responded.

After J Lo's tweet, Al-Ayoubi backed down, blaming the original tweet on one of his staff members.

"Dear @JLo I wonder if you can accept my sincere apologies about the wrong tweet which was written by my assistant without my knowledge," he wrote.

The doctor added, "I sincerely apologise to @Jlo & her fans. I want to remind everyone it was NOT me who sent that wrong tweet ! it was my assistant."

Lopez isn't the first celebrity this week to be accused of getting plastic surgery. 

Tamar Braxton Plastic Surgery Rumors

Enstars reported earlier Actress Renee Zellweger ignited rumors that she had plastic surgery performed on her face after she recently attended the screening of the movie, Long Shot: The Kevin Laue Story looking like a completely different person. 

While she attended the event to show her support for the team behind the touching story , Radar Online reported that her new face was the hottest topic of conversation.

According to RumorFix, "her appearance has set tongues wagging that she may have had an eye work done, with plastic surgery to remove excess skin from the eyelid  to provide a more 'wide eyed' look."