Simpson-Wentz and her 3-month-old son arrive at London's Heathrow Airport. Plus: Christina & Max, Britney Spears, Justin & Jessica and more

WOMAN WARRIOR

Reese Witherspoon is front and center in Washington, D.C., on Tuesday, attending a press conference on behalf of her role as global ambassador for the Avon Foundation for Women. The event – part of the Global Forum for Women and Justice – announced the organization's new efforts to end violence against women.