Where is the blue boy currently exhibited?

As of my last knowledge update in October 2023, "The Blue Boy," painted by Thomas Gainsborough in the 18th century, is currently exhibited at The Huntington Library, Art Museum, and Botanical Gardens in San Marino, California. The painting has been a significant part of their collection since the early 20th century. For the most current information, it's advisable to check The Huntington's official website or contact them directly.