Brooke Shields is eager to expand her family with husband Chris Henchy - before she's too old to have a biological child.
The couple share daughters Rowan, six, and Grier, three.
But Shields admits she is concerned about her reproductive health as she approaches her 45th birthday this May (10).
She tells U.S. magazine Life & Style, "I'd love more kids. I don't know how much longer my (biological) clock is going to tick, so it's going to depend on my egg age."