They're letting their support be known... while cameras roll, of course!

Kim, Khloe, and Kourtney Kardashian got all glammed out to visit a Planned Parenthood clinic in LA yesterday, and it was all filmed for Keeping Up with the Kardashians.

A source tells X17:
    "The girls felt that since they have such a huge audience, they could really make a difference and shed some light on just how important Planned Parenthood is for those who can't afford the services they provide elsewhere. They know how privileged they are, and simply wanted to give back. This was their way of doing that."

The reality star sisters mostly shy away from getting political, but this is a pretty obvious F-U to Donald Trump and his ongoing battle to defund the organization.

We give them a lot of grief, but we have to commend them for raising awareness on such an important issue. Stars like Lena Dunham and Chelsea Handler have been protesting the POTUS' attempts to strip funding from PP, and the K clan has jumped on board.

What must the patients have thought when these three walked in the door?!