While most celebs happily wished their dads a Happy Father's Day on social media, it wasn't a joyful occasion for everyone.
Kate Hudson's older brother Oliver posted a nasty message on Instagram directed towards their estranged father, Bill Hudson.
"Happy abandonment day… @katehudson," the 38-year-old wrote next to a picture of Bill with his two eldest kids when they were younger.
Kate was just 18-months-old when her parents divorced in 1980. The 36-year-old and her brother were subsequently raised by mom Goldie Hawn and her longtime partner Kurt Russell, whom they've long called their dad.
In fact the blonde beauty, who has two kids of her own, chose to pay tribute to Kurt on Sunday, captioning a picture of the duo, “Pa, just simply.....Thank you Happy Fathers Day I love you to the moon and back. #HappyFathersDay.”
Bill is also the father of two children with ex-wife Cindy Williams and has a daughter with a former girlfriend.