Catherine Zeta-Jones and Michael Douglas share more than just 16 years of marriage, they also have the same birthday. On Sunday, the actress commemorated the occasion with a selfie on Instagram. "A birthday kiss for my hubby. Happy Birthday to you and me," she captioned a photo of her giving her man a kiss on the cheek. While Catherine celebrated her 47th year, Michael turned 72. The pair tied the knot back in 2000 and are proud parents to 13-year-old daughter Carys and 16-year-old son Dylan. Even though they briefly split in 2013, their love appears to be stronger than ever.