For the occasion, Luna wore a beautiful pink dress and a wide grin.
“Big girl now,” Vilailuck captioned one shot.
Her musician dad also shared a photo of Luna in the same outfit, taking after dad and reaching up to touch the piano keys.
That same night, Luna’s parents had a special date of their own, cooking with Outback Steakhouse chefs in personalized jackets.
“It’s happening!” Teigen declared in one Snapchat clip.
The pair cooked up a tasty-looking Bloomin’ Onion, which Legend shared a photo of on his Instagram.
For more from the cute family, watch the clip below!