Lively wore this gorgeous Gucci dress in 2014 when she was pregnant with first daughter, James.J. Countess/Getty Images Entertainment/Getty Images
Yellow is clearly a trademark pregnancy color for Lively, who wore this flowing chiffon dress while pregnant with Inez.Alessio Botticelli/GC Images/Getty Images
Lively was pregnant with third daughter Betty when she wore this beaded yellow dream to the 'Detective Pikachu' premiere.JNI/Star Max/GC Images/Getty Images
Little Black Dresses are perfect for accentuating a baby bump.D Dipasupil/FilmMagic/Getty Images
Cannes is all about glamour and Lively definitely delivered in this stunning Atelier Versace gown.NurPhoto/NurPhoto/Getty Images
Lively sported a breezy Lindsey Thornburg dress and an adorable bump in 2016.Alessio Botticelli/GC Images/Getty Images