By peoplestaff225
Updated February 02, 2009 11:00 AM
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Whoops! Savannah Mahoney stops for a fallen sweater while making her way to an indoor playground with mom Marcia Cross, who toted twin sister Eden on Friday in Santa Monica, Calif.

The twins will celebrate their second birthday later this month! Dad is stockbroker Tom Mahoney, who was recently diagnosed with cancer. “He is currently under treatment and is responding very well,” says a rep.

Eden wears Umi Bluebells in Ruby ($30). Savannah wears a hat by Baby Lulu.