The article highlights celebrity book club picks for July, noting that the trend started by Oprah Winfrey has been continued by stars like Reese Witherspoon, Emma Roberts, Dua Lipa, and Jenna Bush Hager. These celebrities select monthly books that often become bestsellers. The piece lists several July picks, including Dua Lipa's choice which she described as revealing things about a country she loves, and Jenna Bush Hager's pick "The Shampoo Effect," which she called a delicious summer read about old friendships. Other picks include Virginia Woolf's "The Waves" from TeaTime, Oprah Winfrey's selection of "Little Wonder" by Sophie Keller, Natalie Portman's choice of "Reflections in a Golden Eye," Katie Couric's thriller pick "Someone Else's Husband," and a Pulitzer Prize finalist novel by Daniel Mason. The article emphasizes the joy these celebrities find in sharing their love of reading and recommending books to their followers.