The Charlie's Angels star, 38, looked radiant as she showed off her baby bump for the first time since announcing her pregnancy earlier this week.
She arrived at the second annual Baby2Baby gala in Los Angeles on Saturday (9 November) wearing a beautiful light blue gown with tiny white flowers.
Actress Drew - who was honoured at the event - attended the charity gala with art dealer husband Will Kopelman, who looked dapper in a classic tuxedo.
The couple got married last year and already have a 13-month old daughter called Olive.
After confirming her pregnancy, Drew told People she was "overjoyed".
She added: "We both are thrilled [because] we just wanted so badly for Olive to have a sibling."
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