For a couple years there, Miley Cyrus was known more for her tongue than her activism, but with the help of social media, that reputation is changing. Cyrus posted this selfie after the US Supreme Court ruling in favor of same-sex marriage to demonstrate her support and solidarity.

Photograph courtesy of Miley Cyrus

Every Monday on Instagram, Demi Lovato posts a makeup-free selfie with the hashtag #NoMakeupMonday and encourages other women to do the same. Unlike magazine covers, selfies give women the chance to reset society's beauty standards themselves.

Photograph courtesy of Demi Lovato

Selfies aren't just about how we look; they're also about what we're up to. Wielding our own lenses allows us to share the experiences and places that we want to define us. It gives us the opportunity to express how proud we are of our adventures. (Plus, it eliminates the unique horror of having to ask a stranger to take our picture in front of the Grand Canyon).

Photograph courtesy of Anna Kendrick

A wise woman once said that happy girls are the prettiest, and in a culture where physical perfection is taken so seriously, it's often up to us to communicate that there are more important things. In this selfie by the pool, Selena Gomez points the camera at her giant laugh, as opposed to her bikini body, to show us her image through her own eyes.

Photograph courtesy of Selena Gomez

Gwyneth Paltrow exhibits the power of being surrounded by inspiring, positive women through this selfie with photographer Amanda de Cadanet, model Amber Valletta and actress Demi Moore. "So #grateful to mark another birthday with my inspiring beautiful friend @amandadecadenet and her cadre of incredible women @ambervalletta #demimoore" she captions. Huddled close in minimal makeup and cozy clothes, the women pose in a way that conveys the sort of intimate friendship we all aspire to have.

Photograph courtesy of Gwyneth Paltrow