Butter Yellow Outfit Trend Style Guide. Butter yellow is the breakout color of Summer 2025, and it’s taking over closets everywhere. If you’re looking for fresh summer outfit ideas, you’ll love this soft, sunny hue that is surprisingly easy to wear. In this guide, we’re breaking down the butter yellow outfit trend: how to style it, what to pair it with, and where to shop the cutest pieces for every budget. From breezy butter yellow dresses and sets to subtle accessories that add just the right pop of color, these outfit ideas will have you looking stylish and on-trend all season long. Get inspired by how celebrities and designers are wearing butter yellow and find easy ways to make the yellow outfit aesthetic trend your own. LTKFindsUnder50 LTKStyleTip LTKSwim