This elegant piece is a blue and white Chinoiserie porcelain footbath, a classic decorative item often used as a planter, jardinière, or centerpiece bowl. 

These vessels are characterized by their oval shape and sturdy handles, often featuring intricate hand-painted floral, botanical, or garden scenes. The specific pattern on your bowl—with large peonies and trailing vines—is a hallmark of Chinese-inspired ceramic design.