Jessica Simpson 'Couldn't Be Happier' For Sister Ashlee Simpson Ross After Her Pregnancy Announcement

Jessica Simpson is so happy for her younger sister, Ashlee Simpson Ross on her pregnancy.

The 39-year-old singer and author commented on Ashlee‘s post on Instagram that revealed the news.

“I couldn’t be happier for my favorite person on the planet!!!” she wrote. “This family of 5 over here are beyond elated for YOU, Evan, BX, and Jagger to expand the beautiful gift of family.”

Jessica added, “Auntie of 3!!! This is hands down the most exciting news I could possibly imagine!!!”

Ashlee is mom to Jagger with husband Evan Ross, and also mom to Bronx Wentz that she shares with ex, Pete Wentz.

She and Evan announced her pregnancy on Thursday (April 30).