Popsugar Celebrity Celebrities Celebrity Birthdays For Every Day of the Year 365 Days of Star Birthdays: Who's Your Celebrity Birthday Twin? 2 April 2018 by Lucy Kenny View On One Page Photo 363 of 366 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 363 December 28 — Sienna Miller Also on this day: Maggie Smith, John Legend, Stan Lee, Noomi Rapace Previous Next Start Slideshow CelebritiesCelebrity Birthdays