From young mom Tori Spelling to expectant mom Melissa Rycroft, ET was there as the celebs showed up for the 17th Annual Dream Halloween event in support of the Children Affected by AIDS Foundation.
"This is so much easier than my actual wedding gown," newlywed and "CSI: Miami" star Eva La Rue said of her corpse bride getup. Meanwhile, Rycroft and husband Tye Strickland stepped out in style, New Jersey style that is. The couple was dressed as "Jersey Shore" stars Nicole "Snooki" Polizzi and Paul "DJ Pauly D" DelVecchio. "We're not in costume tonight," Rycroft joked.
As for the pregnancy, the TV personality told ET that she's doing "really, really well." Rycroft did say the couple is keeping some things secret. "We're keeping the name secret. There are some things we want to keep between just us," she admitted.
Watch the video for more interviews and glimpses at some of your fave celebs in costume.