Sarah Jessica Parker for UNICEF

UNICEF Ambassador (and actress, of course) Sarah Jessica Parker hosted the UNICEF Halloween Party earlier today at NYC’s UNICEF House. U.S. Fund for UNICEF President Charles J. Lyons and UNICEF Executive Director Ann M. Veneman were also present for the event. Find out more on trick-or-treating for UNICEF.

It was also announced today that Sarah Jessica Parker, 41, will replace Rachel Weisz to star opposite Dennis Quaid in the Noam Murro-directed comedy Smart People. The film starts shooting Nov. 6 and Thomas Haden Church co-stars. SJP will play the role of a doctor who falls for a professor whose wife’s death has turned him into a bitter man.