Hair help!

Jessica
Wanted to keep some privacy cause you never know if people you know are on this app! Lol so that's the reason for the funny edit. But I'm getting my hair done soon, last time before my wedding so I need opinions! This is my hair currently & I want to go lighter for summer but not sure if it's a good idea before my wedding! The first picture is what I want it to look like. Opinions? Or should I stick to my color for now.