Today ( July 18th ) is Kelly Reilly 's (aka P&P 's own Caroline Bingley ) 43rd Birthday! Kelly has joined Instagram over a year ago and you can wish her a happy birthday in her verified official Instagram account: @mzkellyreilly . She's currently co-starring as Beth Dutton in Yellowstone Season 3 on Sundays on Paramount Network with Kevin Costner, who plays her father. Kelly Reilly was born on July 18, 1977 in Surrey, England. She is an actress, known for Sherlock Holmes (2009), Flight (2012) and Eden Lake (2008). She has been married to Kyle Baugher since 2012. See full bio on IMDB» Born: July 18 , 1977 in Surrey, England, UK Trivia: She was nominated for a 2004 Laurence Olivier Theatre Award for Best Actress of 2003 for her performance in "After Miss Julie" at the Donmar Warehouse. She became the youngest actress ever to be nominated for that category (aged 26). See more trivia (via imdb ). Happy Birth