The new and distinct crape myrtle plant named Lagerstroemia ‘;Chai Berry’; has a dense, short, compact, fairly upright habit, is ground hardy to at least USDA zone 6, has glossy, deep medium-green foliage with faint marginal wine blush that emerge cinnamon-colored. The flowers arise from shiny, reddish buds covering the shrub with their rose pink color. The new plant resists leaf spot and powdery mildew and is useful in the landscape as a specimen, en masse, or as a container plant.