Celine Dion is definitely on the comeback trail ... she made her second public appearance in a week at Katy Perry's concert last evening -- and Prince Harry and Meghan Markle were also in the crowd!!!
Celine and her twin sons, Eddy and Nelson, dropped in to catch Katy's performance at Resorts World Theatre in Las Vegas Saturday night -- and she looked absolutely spectacular.
This is great news given her health struggles.