Sarah Jessica Parker and Matthew Broderick
PAUL SCHMULBACH/GLOBE PHOTOS
Want to know what's behind Sarah Jessica Parker and Matthew Broderick's twin daughters' names
PEOPLE's Celebrity Baby Blog spoke
's Linda Rosenkrantz and Pamela Redmond Satran, authors of Beyond Ada & Aiden
, to find out.
"Sarah Jessica is known for her individual style, and wouldn't be expected to simply follow current trends – after all, she and Matthew named their first child the classic James," Pamela explains.
"While many parents claim to want names that are 'unique,' the couple managed to come up with a pair that are truly distinctive, that sound cool and yet are not overused or gimmicky."
Visit the Celebrity Baby Blog for more from Pamela and Linda