Winehouse was found dead in her Camden, North London flat on Saturday at the age of 27 and was laid to rest in a private funeral on Tuesday.
In an interview with AMP Radio, GaGa revealed that while she did not personally know Winehouse, she felt a deep affinity with the 'Back To Black' singer, for whom she was often mistaken for early in her career and who helped her to feel less alone.
"I loved her so much. I was nobody when she was first coming out. I have really dark hair and all the time on the street people would go, 'Amy!' And they would go, 'Back to Black'. They'd scream at me," Lady GaGa recalled.
"I loved her and I just remember feeling like I wasn't alone because she was so different and she was so special."
The 'Edge of Glory' star went on to say that she was profoundly affected by Winehouse's passing and hoped that it would serve as a greater warning to society, adding: "It's really devastating and I think it's a lesson to the world: Don't kill the superstar. Take care of her. Take care of her soul."
GaGa previously paid tribute to Winehouse, saying that she offered "hope" for her own success in the industry and changed pop music forever.
> Amy Winehouse was happiest she had been for years, says dad Mitch
> Amy Winehouse mourned in Camden
> Obituary: Amy Winehouse
> Amy Winehouse 1983 - 2011: A life in pictures
Watch Amy Winehouse's video for 'Back To Black' below: