The stars came out in costume this weekend for the 16th annual Children Affected by Aids Foundation’s Dream Halloween event. The goal of the night, which also includes fundraising, is to create an experience that exemplifies what every child would dream of when celebrating Halloween. Celebs in attendance included Jamie Lee Curtis as a flower child (who also arrived in her hydrogen-powered Honda Clarity), Daryl Hannah as a cat, Hilary Shephard as Dorothy, and Noah Cyrus and Emily Grace Reaves as, well, I’m not sure. Vampire goth chicks? Check out pics below for more shots from the evening!

While it’s still not definitie if Miley and Justin are acutally dating, one thing that IS definite is how great biking can be for the environment! Justin Gaston and Noah Cyrus were seen helping Mama Earth by biking together through Los Angeles earlier this week. Way to set a good example, Justin!

For more pictures, visit JustJared.com!