The only outfit I love on you and find the most flattering is the first one. White peplum top and cobalt blue jeans. With that reddish statement necklace.
One tip for you, do NOT cuff your jeans. Leave them long. When it's cuffed, your legs appear shorter. Your high school reunion is no time to be a soccer mom at Disney. Rock the long legs and make them look longer with sky high heels. I would do a darker shoe, but the nude sandals are nice on you.
eta: I like the sequin top but I like how the peplum top gives you a tiny little waist, while the design on the sequin top seems to be going outwards, like a tree with branches. I am sober, by the way, and not hallucinating. lol