Just hours after Kate Middleton and Princess Charlotte's surprise piano duet aired, the mom and daughter joined the royal family on Christmas as they headed to church.

Plus, of course, it’s an opportunity for the Princess of Wales’s legions of fans to see her latest fashionable take on festive dressing—and this year, she didn’t disappoint. The royal stepped out in a brown plaid coat by Blazé Milano,

After the Princess of Wales teased a piano collaboration in the Royal Carols: Together at Christmas special, fans were delighted to learn their speculation was right. Princess Kate and Princess Charlotte performed a lovely piano duet at the holiday event, which was filmed on Dec. 5 and aired on ITV on Christmas Eve.

Catherine, the Princess of Wales, and her daughter Princess Charlotte teamed up for a special duet. On Christmas Eve, the official social media accounts for the Prince and Princess of Wales released a video that showed the royal mother-daughter duo performing a special rendition of Holm Sound by Erland Cooper on the piano.

"Goodbye June" director Kate Winslet shares the advice she gave her children Mia and Joe, who have followed in her footsteps as actors.

For the royal family's attendance at the Church of St. Mary Magdalene's Christmas service, Kate wore a brown plaid Blazé Milano coat, complete with a patterned scarf and a brown Juliette Botterill Millinery fascinator. It wasn't Kate's first time wearing the coat this year—and the first occasion marked a special day for her.

Kate Middleton and Princess Charlotte teamed up for a surprise piano duet at her fifth annual “Together At Christmas” carol service earlier this month. The mother of three, 43, released a clip of a rendition with her daughter, 10, of “Holm Sound” by Erland Cooper via social media on Wednesday following the U.K.’s ITV broadcast at 2:25 p.m. ET.

Kate Hudson, her fiancé Danny Fujikawa, parents Goldie Hawn and Kurt Russell and brothers Oliver Hudson and Wyatt Russell attended a special screening of her new movie Song Sung Blue in Aspen, Colo. Hawn and Russell have owned a home in the Colorado ski town for decades and typically spend the Christmas holiday there

Kate Winslet wasn't looking for a movie to direct, but she couldn't pass up the chance with 'Goodbye June,' a screenplay written by her son. She tells EW how it happened and about the 'completely nuts' shoot.

For years she was pigeonholed as a rom-com star. Her turn as a blue-collar mom with a love of Neil Diamond just might vault her back to the Oscars.

Kate Middleton reportedly trolled Prince Harry's love life with a gag Christmas present before he married Meghan Markle. Keep reading to learn what she gave him.