There are 488 days until Kristin Cavallari's debut book Balancing on Heels drops. What can you do in the meantime? Kristin posted this idea to Instagram today: "Join me as I wear red lipstick to support @GoRedForWomenAHA and the movement to end heart disease and stroke in women by sharing your#GoRedSelfie."

See, like this:

It's just one idea.

This has been 500 Days of Kristin.

[Photo via Getty]