sentences:  On July 23 of that same year, Pink Lady performed in front of over 100,000 fans at the stadium.Three years later on March 31, Pink Lady returned to perform their final concert at the time.On June 20–22, 1987, Madonna sold all of the 65,000 available tickets for 3 concerts (around 21,600 per show) on the Who's That Girl Tour in a few hours.