The Duke and Duchess of Cambridge welcomed their third child, a baby boy, on Monday.

The duchess left the hospital with her son wearing a Jenny Packham dress that looked very similar to one worn by another famous royal lady a generation ago.

Twinning in tribute to her husband's late mother.
Ellie Hall is a senior reporter for BuzzFeed News and is based in Washington, DC.
Contact Ellie Hall at ellie.hall@buzzfeed.com.
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