Lunchtime Lowdown: Julia Roberts Signs on As Ambassador of Global Alliance for Clean Cookstoves; Charlie Sheen Spends the Weekend with his Twin Boys

May 7 2011, Published 6:02 a.m. ET

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Julia Roberts signs on as Ambassador of the Global Alliance for Clean Cookstoves. (Just Jared)
Charlie Sheen spends the weekend with his twin boys, Max and Bob. (TMZ)
Chris Brown's mother opens up about her son's recent upset on the Today Show over being asked about Rihanna. (Huffington Post)
Oprah Winfrey dishes on Jennifer Hudson after incident with the singer being late to her talk show. (Pop Eater)
Take a look at some of Hollywood's hottest moms on Mother's Day Weekend! (E! Online)