Most beautiful-Violet, Leyla, Violetta, Zurie or Sienna?

All are nice, but Leyla is my least favorite. I like Violet and Sienna best. Zurie is nice but it sounds like you're trying to copy Katie Holmes or Angelina Jolie's kids' names, a little too trendy. Violetta sounds like you're trying a bit too hard, but if you want to make Violet fancier how about Violette? All sound great with your last name! Good luck!