May 29, 2011 02:00 PM

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Mom-to-be Kimberly Stewart quenches her thirst — and gives us a glimpse at her bump — during a trip to the Coffee Bean & Tea Leaf on Wednesday in Studio City, Calif.

The actress/model, 31, is expecting her first child with actor Benicio del Toro.

Although the parents-to-be are “not a couple,” the pair are “looking forward to the arrival of the baby.”

RELATED: BumpWatch: Rod and Kimberly Stewart’s Sunny Stroll

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