Former “Below Deck” Cheif Stew Kate Chastain gave birth to her first child, a son named Sullivan Cay, in May 2023, and now she’s not only celebrating his first birthday, but also her first year as a mother.
“My first album titled ‘First year as a mom’ has hit songs: ‘what’s wrong with the baby’, ‘close your eyes and be quiet’, and ‘I thought I’d be a trendy mom…’ Chastain wrote as a caption for a video montage on Instagram on May 3rd showing baby Sullivan.
Chastain created her montage using the song “Let’s Hear It For the Boy” and matched her clips to the song’s lyrics. When the lyrics said “He ain’t got much to say,” Chastain included a clip of Sullivan babbling, and after the line “Maybe he sings off-key,” she added a clip of Sullivan sing-screaming at a high pitch.
Watch Chastain’s video below.
Fans & Friends Send Birthday Wishes to Sullivan
Fans, friends, and fellow Bravo stars commented on Chastain’s post, celebrating her first year as a mother and wishing Sullivan a happy birthday.
“Simply adorable,” Sutton Stracke from RHOBH wrote, while Marysol Patton from RHOM added, “Happy birthday beautiful baby Sullivan!! You have my Daddy’s birthday and my best friend Alexia’s birthday!! Watch out Kate that’s trouble right there!!”
“Shahs of Sunset” star and Chastain’s “Traitors” season 2 castmate Mercedes “MJ” Javid shared love, writing, “❤️ ❤️ ❤️ ❤️ ❤️ ❤️ ❤️ ❤️.” Her season 1 co-star Andie Vanacore commented, “Happy 1st birthday Sullivan! And Happy 1 year of parenting to you Kate, let’s be real though.. you’re definitely a cool mom ❤️.”
“Oh my goodness he is so precious! Congratulations on making it through the first year of motherhood!” one fan chimed in.
“The best video ever I love you Kate miss you so much and Captain Lee your son is absolutely gorgeous enjoy your day we all love you happy first year baby ❤️ ❤️ 🥳 🥳 🎂 🎂,” another fan added.
Chastain shared another post on May 3 with photos from Sullivan’s birthday party. The shots showed Sullivan covered in food, with Chastain writing, “Baby 1 year old birthday tuxedo for sale. Slightly used.”
Kate Chastain is Raising Sullivan On Her Own
Chastain is raising her son Sullivan as a single mother, which she revealed to Andy Cohen on the “Watch What Happens Live” After Show in December 2023. She told Cohen, “I’m doing it solo and perhaps with some help, but I’m happy to do it alone.”
Despite this, fans still speculated about the father's identity. One fan commented, “His dad’s twin!!” on Chastain’s first birthday post. Chastain previously addressed rumors that her ex and former “Below Deck” costar Ben Robinson might be Sullivan’s father.
Chastain shared a photo of Robinson as an infant next to a baby photo of Sullivan, writing, “It would be great if people would stop commenting and messaging me ‘baby Ben!’…….every single day. For reference this is Ben as a baby on the left next to Sullivan. Clearly not related.”
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