Kate Chastain has an amusing theory about her son, Sullivan Cay.
On Friday, September 5, the Below Deck alum returned to Instagram to offer another glimpse at her life as a single mom. Kate posted a video of her 2-year-old boy lounging on the couch, holding a yellow car toy as he and Kate played some kind of guessing game.
Kate Chastain shares her funny exchange with her son, Sullivan
“Is it white?” Kate asked, to which Sullivan replied, “No.”
“Is it gray?” she asked.
“No,” the boy answered.
“Is it indigo? Is it brown?” Kate continued.
“No. No,” Sullivan said with a smile.
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“Is it yellow?” Kate finally asked.
“Yes. Yes,” the toddler responded, causing his mom to giggle.
Kate didn’t provide any more context about the adorable back-and-forth, but suggested they had similar exchanges in the past.
“His favorite new game (I think he just likes saying ‘no’ to me),” she captioned the post. “I cropped out the first minute of the other colors.”
Kate Chastain moves into a 100-year-old Florida home
The former yachtie shared the family update nearly eight months after she and Sullivan moved into their new Florida home. Kate has since completed several upgrades to the 100-year-old property, like adding black-and-white awnings to her front windows. Kate has also revealed her plans to repaint the home’s exterior trim and potentially add a backyard pool. The latter, of course, will be an ambitious and pricey undertaking, but Kate is willing to invest, as she considers the property her forever home.
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“Especially now that Sullivan’s getting older, I’m really excited to do a little height chart on his door frame,” she previously told The Daily Dish. “’Cause I know we’re gonna be here for that many years to chart his growth, so that’s just really exciting and moving is exhausting, so I’m happy to not be doing that for a long time.”
Kate Chastain says she’s “never moving again”
Years before giving birth to Sullivan, Kate had lived in an NYC West Village apartment with her dog, Halo. She returned to Florida during the pandemic and eventually secured a “craftsman bungalow” as she prepared to welcome baby No. 1. Kate and Sullivan remained at the house until early 2025, when the mom officially purchased their current abode.
“Proud new owner of my dream home,” Kate captioned a January Instagram video of Sullivan exploring their backyard. “Never moving again.”
Learn more about Kate’s home life with Sullivan and her latest career move involving Vanderpump Rules alum Tom Sandoval.