Some of Hollywood's hottest stars were feeling charitable over the scary Halloween weekend and stepped out in costume to support CAAF's 17th annual Dream Halloween event. 

jamie lee curits niecy nash katie krause

Jamie Lee Curtis, rocking a bright orange CAAF cheerleader uniform, hosted the festive soiree at Santa Monica's Barker Hanger.  Hollywire's own Katie Krause was front and center on the red carpet getting all of the spooky scoop from the festive celebrities!

[jwplayer|config=Hollywire|width=640|height=380|file=http://content.hollywire.com/media/2010/Children_AIDS_Halloween_h264HD.flv|image=http://content.hollywire.com/media/2010/Children_AIDS_Halloween_h264HD.jpg]

Related Story: Jamie Lee Curtis & Stars Shine at You Again Premiere -- Exclusive Video!

Former DWTS & Bachelor contestant Melissa Rycroft walked the carpet as Jersey Shore's Snooki while her hubby, Tye Strickland, dressed up as DJ Pauly D. 

The brunette bombshell, who is expecting a baby girl in February,  revealed to Hollywire that she wanted to take a different approach to pregnancy costumes.  "We are huge jersey Shore fans -- we've never been shy about that before.  So,  Halloween you know, I looked at the pregnancy costumes and I just wasn't feeling any of them," admitted Rycroft.  "I just didn't want to be like an oven with a bun in the middle of it, so we were watching an episode and thought 'that could be a lot of fun!'"  

Related Story:  The starlets of Pretty Little Liars Share Fashion & Beauty Secrets -- Exclusive Video!

Modern Family star Rico Rodriguez stepped out with his sister, Raini, in adorable Grease inspired outfits.  The sibling pair dressed up as Danny & Sandy from the musical movie and even did their best rendition of Greased Lightnin' for Katie right on the red carpet!

Related Story: MTV's The Buried Life Heads Halloween Horror Nights -- Exclusive Video!

DWTS contestant & Insider correspondent Niecy Nash also showed up for the charitable occasion, as did Booboo & Fivel Stewart and Modern Family's Nolan Gould. 

niecy-nash-katie-krause-dream-halloween