Female celebrities are leading a fundraising campaign for Planned Parenthood after HBO late-night host John Oliver called on viewers during his Sunday show to donate to the clinic in the name of Vice President-elect Mike Pence.

Pop phenomenon Katy Perry, soap opera actress Amber Rose Tamblyn, singer Bethany Cosentino and actress Jaime King posted messages on Instagram and Twitter, imploring their followers to chip in $100 for Planned Parenthood, out of fear Donald Trump and the outgoing Indiana governor would shut down the organization because it provides abortions to women.