Overview

• Chris Pratt posted a sweet birthday message and photos on Instagram, celebrating Lyla's fourth birthday.
• Katherine Schwarzenegger shared images of their decorated living room and a balloon bouquet for Lyla.
• The couple, who are expecting their third child, expressed their love and disbelief at how quickly Lyla is growing up.
• Lyla's birthday celebration featured a Western-themed party planned by Schwarzenegger.
• Pratt and Schwarzenegger also have a younger daughter, Eloise, and Pratt has a son, Jack, from his previous marriage.