According to overseas reports, Cooper waited until they were at their reception, in front of 300 guests, to share their joy.
Allen's wedding dress designer, Delphine Manivet, said her baby bump looked adorable.
“It’s beautiful that she is pregnant, and I am very happy for her. She is very happy about that – it is something wonderful,” she said.
“You can see, of course, the little stomach – it looked very cute with the dress.”
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