Brown published a memoir in March 2019 titled Karamo: My Story of Embracing Purpose, Healing, and Hope. In June 2019, Brown appeared in Taylor Swift's "You Need to Calm Down" music video.
In 2019 Brown competed on the 28th season of celebrity dance competition Dancing with the Stars. He was paired with professional dancer Jenna Johnson. Brown and Johnson were the fourth couple eliminated. Another competitor on the show was former Trump White House press secretary Sean Spicer, who was seen as a divisive and controversial choice. Brown publicly came to "defend" him "calling him 'a good guy' and 'a friend.' He even said that he 'was proud of him.' " Brown was criticized by many, including author Roxane Gay for normalizing Spicer and his work in the White House. Brown said he did not appreciate Spicer serving as a mouthpiece for many lies in service of Trump. His trailer at DWTS shared a wall with him; Brown strategically had transgender friends over, and invited Spicer to socialize. Later he would tell Spicer how the actions and policies against LGBTQ rights affect those people. Brown explained he felt he could connect with Spicer as βhe has the capacity to find out where others are coming from and to help them become more open-minded and educated."
In November 2019, Brown's children's book, I Am Perfectly Designed, written with Jason "Rachel" Brown and illustrated by Anoosha Syed, was published by Henry Holt. Jason said that the title of the book stemmed from Brown always saying it to Jason growing up.