Finding well-fitting bikinis for small busts can be challenging, as many styles lead to gaps or discomfort. After extensive testing of 25 bikinis, several standout options emerged. The Left On Friday Sunday Top is the top pick, known for its buttery-soft fabric and supportive fit, priced at $95. For budget-conscious shoppers, the Fatty Tiger Women's High Waisted Thong Bikini Set offers a comfortable fit with adjustable straps, available for under $40. Triangle tops are recommended for their adjustability, allowing wearers to customize fit, while quick-drying materials are favored in styles like the Carve Designs bikini. Eco-conscious consumers can opt for the Reformation Soleil Bikini, made from renewable materials. Each of these bikinis is designed to enhance and support smaller busts without bulky padding, making them ideal for various summer activities.