The Sister Sister Sister Tour is the second headlining concert tour by American band Haim, in support of their second album, Something to Tell You (2017). The tour began on April 3, 2018, in Portland, Oregon, at the Arlene Schnitzer Concert Hall. They continued throughout North America and finally concluded their 37-date tour on June 21, 2018, in Oslo, Norway at the Sentrum Scene. Opening acts for the tour included rapper Lizzo, who was present for most North American dates, as well as performers Grace Carter in Europe and Maggie Rogers on both continents.