Is Juliette a tragedeigh?

I don’t know why I was so convinced that Juliette was the common spelling of the name? But I’m seeing Juliet all over the place now. Are they both right or is Juliette a tragedeigh?

Trying to pick a name for my baby due this fall and really like the name but not sure on spelling. My baby’s dad said he likes both but that the two versions have different pronunciations? They’re one and the same to me and when he tried to point out the difference it still sounded the same lol