Another wrote: "Hello Celine I worry, I too lost weight, but please eat, enjoy it and you will look even more greater than how you are right now..."
But the five-time GRAMMY award winner refuses to let the online trolls get to her.
"If I like it, I don't want to talk about it. Don't bother. Don't take a picture" she said to The Sun. "If you like it, I'll be there. If you don't, leave me alone."
The 50-year-old has dramatically changed her style since the passing of her husband René Angélil in 2016.
"The way that we used to work before was more conservative. I'm doing this for me. I want to feel strong, beautiful, feminine and sexy," she said about her edgier look.