Stories about girl activism circulate as exceptional narratives of individual girl power causing intergenerational partnerships and community collaborations to become invisible and apparently unnecessary to girl activist efforts. At the same time, practitioner-scholars attest that sharing authentic stories about intergenerational feminist praxis is difficult to do since it requires us to write with intentional vulnerability exposing the failures and tensions inherent to girl activism networks. In this article, I provide an autoethnographic exploration of the intergenerational processes involved with organizing Girls Speak Out for the International Day of the Girl at the United Nations. I draw inspiration from Lauren J. Silver's methodological remix of youth-centered activism, and in doing so, reassess the impact and experience of leveraging girls’ political voices in spaces of normative power.