Kate Hudson is supporting her oldest child's permanent milestone! The Oscar nominee's 18-year-old son, Ryder Robinson, got a new tattoo this week, inking "CBR" on his upper arm. Kate was on hand for Ryder's appointment and smiled while taking video of the big moment. Ryder showed off the results in an Instagram photo with artist Claudio Traina of Sixty Ink. The trio of letters is believed to be the initials of Ryder's sister Cheyenne, 12, brother Bingham, 10, and sister Rani, 4.