Because training bras don't offer padding or support they should be replaced with other bras when a girl's breast really begin to develop. (verywellfamily.com)
Many (ok, most) nursing bras look like training bras from seventh grade, something your grandmother would wear, or a cross between the two. (pregnancy-info.net)
Today's training bras come in a variety of colors and patterns, which can make them fun for your daughter to wear. (verywellfamily.com)