Now, to celebrate her 21st birthday, Catherine ... dress also includes these same lace and sequin details along the bottom of the skirt, creating a sort of sandwich effect. Back when Zeta-Jones ...

She wore an off-the-shoulder black gown, and showed some leg thanks to a slit that ran all the way up one side of the dress. Catherine Zeta-Jones and Michael Douglas at the Golden Globe Awards.

Carys Douglas, daughter of Catherine Zeta-Jones ... dress is older than the birthday girl. Though it doesn't show its age. On her own Instagram, the Chicago star shared sweet black-and-white ...

Catherine Zeta-Jones/Instagram Catherine ... at the Hotel du Cap-Eden-Roc in Antibes, France. Zeta-Jones wore a captivating black sequin mini dress that featured a plunging asymmetrical neckline ...