Jessica Simpson and Eric Johnson’s daughter Maxwell Drew turned 7 on May 1.
Maxon and Aiza Villaclara
Sisanie and husband Michael’s twins — daughter Aiza Delmar and son Maxon Jae — turned 1 on May 2.
Dana Isaiah "DJ" Thomas Jr.
Jordin Sparks and husband Dana Isaiah’s son Dana Isaiah Jr., a.k.a. “DJ,” turned 1 on May 2.
Michael and Nicole Johnson Phelps’ son Boomer Robert turned 3 on May 5.
Tia Mowry-Hardrict and husband Cory Hardrict’s daughter Cairo Tiahna turned 1 on May 5.
Jenni “JWoww” Farley and Roger Mathews’ son Greyson Valor turned 3 on May 5.
Kristin Cavallari and Jay Cutler’s son Jaxon Wyatt turned 5 on May 7.
Alessandra Ambrosio’s son Noah Phoenix turned 7 on May 7.
Hart Kerr Spiegel
Miranda Kerr and Evan Spiegel’s son Hart turned 1 on May 7.
Brie Bella and Daniel Bryan’s daughter Birdie Joe turned 2 on May 9.
Mia Tyler’s son Axton Joseph turned 2 on May 10.
Haylie Duff’s daughter Ryan Ava Erhard turned 4 on May 11.
Chris Martin and Gwyneth Paltrow’s daughter Apple Blythe Alison turned 15 on May 14.
Chrissy Teigen and John Legend’s son Miles Theodore turned 1 on May 16.
Soleil Moon Frye’s son Story turned 3 on May 16.
Kendra Wilkinson and Hank Baskett’s daughter Alijah Mary turned 5 on May 16.
Alec and Hilaria’s son Romeo Alejandro David turned 1 on May 17.
Sean and Catherine Giudici Lowe’s son Isaiah Hendrix turned 1 on May 18.
Ciara and Future’s son Future Zahir turned 5 on May 19.
Nick and JoAnna Garcia Swisher’s daughter Emerson “Emme” Jay turned 6 on May 21.