Kimberly Stewart has given birth to a baby girl fathered by Benicio del Toro, Us Magazine reports.
Although she and the 44-year-old Oscar-winning actor are not a couple, he is very supportive, his rep told the magazine.
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Stewart — the 31-year-old daughter of singer Rod Stewart and his ex-wife Alana Collins — announced her pregnancy in April.
The baby, whose name has not yet been released, weighed in at 8 pounds, 9 ounces.