News Ashlee Simpson Ross Sweetly Wishes Cancer Stricken Dad Joe Simpson Happy Birthday By Emily Krauser 6:40 PM PST, February 19, 2017 This video is unavailable because we were unable to load a message from our sponsors. If you are using ad-blocking software, please disable it and reload the page. 44:06Ashlee Simpson Ross Sweetly Wishes Father Joe Simpson a Happy Bi…03:46‘Sister Wives’: Kody Shares His Hopes for Christine and Janelle …03:28'Sister Wives': Robyn 'Struggles' With Living Monogamously With …18:27'90 Day Fiancé’: Michael Reveals Affair With Another American Wo…02:02'Seeking Brother Husband' Showcases Women Seeking Multiple Male …02:07Inside the ‘NCIS’ Crossover Event With OG, 'Hawaiʻi’ and ‘Los An…01:26'MILF Manor': First Look at TLC's New Dating Series (Exclusive)04:38Golden Globes: Why Jamie Lee Curtis Called Out Paul Walter Hause…03:35Mischa Barton and Rachel Bilson Tear Up Watching Marissa's Death…02:02Jessica Betts ‘So Proud of’ and ‘Constantly in Awe’ of Wife Niec…03:00Brad Pitt Reveals Surprising Hobby He Shares With Daughter Shiloh05:09Steven Spielberg Shares Surprising Secret Behind Ke Huy Quan's C…02:30'Golden Globes': Janelle James on Sitting Near Brad Pitt and 'Ab…03:26'Sister Wives' Star Meri Brown Calls Out Media for Misinformatio…01:06'Abbott Elementary': Gregory's Dad Comes to Town (Exclusive)03:10Brad Pitt Was the Most Popular Actor at 2023 Golden Globe Awards13:39Christine Taylor and David Lascher Revisit Their Secret 'Hey Dud…04:35'The Last Of Us' Showrunner Craig Mazin on Plans After Season 1 …02:15Tatjana Patitz, Iconic '90s Supermodel, Dead at 56 The Simpson family is celebrating the good things in life. Ashlee Simpson Ross took to Instagram on Saturday to wish her dad, Joe Simpson, a very happy 59th birthday. WATCH: Ashlee Simpson Celebrates Son Bronx's Birthday at Disneyland"Happy Birthday Daddy ❤️?? your my sunshine ☀️," Ashlee, 32, captioned a pic of the two goofily embracing as she gives her dad a smooch on the head. "I love you sooooooo very much." View this post on InstagramA post shared by Ashlee Simpson Ross (@ashleesimpsonross)Joe has been battling prostate cancer since last September. In November, his rep told ET that the former manager was recovering from surgery and back to his work as a photographer. He has recently started radiation treatment to battle the cancer, according to Us Weekly.Ashlee and Jessica Simpson's dad was grateful to spend the holidays with his girls just a couple of months ago, sharing fun photos from their festivities, which included sledding."Hangin' at Jessica's for Christmas.... so thankful for my many blessings.... #christmas #christmastree #love," he captioned a photo of his oldest daughter's tree. View this post on InstagramA post shared by Joe Simpson (@joesimpsonphoto)View this post on InstagramA post shared by Joe Simpson (@joesimpsonphoto)WATCH: Evan Ross Shares Sweet Photo of Daughter Jagger Dressed as a ReindeerAfter the birth of Ashlee's daughter, Jagger, in 2015, Joe sat down with ET to talk about his granddaughter, as well as his recent career change. Hear more in the video below. EXCLUSIVE: Joe Simpson Gushes Over Daughter Ashlee's Baby: 'Jagger is Precious!' This video is unavailable because we were unable to load a message from our sponsors. If you are using ad-blocking software, please disable it and reload the page. Related GalleryStar Shots: What's On Instagram and Snapchat?