The author and former Girls Next Door star marched in Las Vegas.
The singer is all smiles while marching in Park City, Utah.
The actress looks out at the sea of protesters at the Women's March in the Big Apple.
The two join protesters in Park City, Utah.
The actress appears at the Women's March in Park City, Utah.
The Westworld star posted this photo on Instagram from the Washington, D.C. march.
The pop singer and U2 guitarist gear up for their performance at the Los Angeles-based event.
The singer marches with her family, including her newborn son, in Los Angeles.