A first birthday marks the completion of a child's first year of life, celebrating their growth and development. This milestone is often celebrated with a party, where family and friends gather to honor the child. Common traditions include cake, decorations, and gifts, making it a joyful occasion for everyone involved. Parents often choose a theme for the celebration, which can include favorite characters or colors. The event may feature activities like games and photo opportunities to capture memories. A smash cake is a popular highlight, allowing the child to enjoy their own small cake, creating a fun and messy experience.