Amy Winehouse would have been 33 today, and one person who will never forget her is Mark Ronson.
Mark produced Amy's smash hit album Back To Black, winning Grammy Awards including producer of the year.
He was also a close friend of the singer, who died in 2011 of alcohol poisoning following a battle with addiction.
Mark paid tribute to the Rehab singer with a photo of them looking relaxed as they hung out together, and called her one of the "most important people in my life".
The Amy Winehouse Foundation, set up in her memory to prevent drug and alcohol abuse among young people, will be marking Amy's birthday with celebrations at Camden Market in London.