Petals LA did the floral arrangements.
“They wanted to create a lovely, serene environment with white and ivory tones where guests could enter a room that would keep their minds at ease,” an attendee told PEOPLE mag of the bash.
“We were blown away by how beautiful our cake for the baby shower was! @hansencakes turned my favorite childhood book into a sweet treat,” Rivera said about the cake on Instagram.
She also expressed thanks to her extended TV and personal fam.
“I’m so grateful that our baby is already surrounded with so much love,” Rivera told PEOPLE of her guests, including her former Glee costars Amber Riley and Heather Morris.