Jessica Alba Celebrates Daughter Haven's 5th Birthday with Watermelon-Themed Bash

They certainly grow up fast! Jessica Alba's youngest daughter Haven just turned 5 on Saturday and the actress documented all the birthday festivities on her Instagram and Snapchat. The second daughter of Alba and Cash Warren and younger sister to 8-year-old Honor, birthday girl Haven enjoyed a day packed with fun activities at her watermelon-themed pool party.

Before the celebration kicked off, Haven and Honor were pampered with green glittery manicures. "Everyone needs a good manicure before a party," Alba captioned a photo of the pretty results. Haven is seen helping her sister swipe on a touch of hot pink lipstick before the darling duo is ready to party.

Alba shares glimpses of all the party preparations—from cutting watermelon into little balls to creating a gorgeous green and pink spread featuring a big birthday cake and cupcakes adorned in tiny watermelon umbrellas to big silver balloons spelling "Haven" in block letters. "It's almost pool time," the Honest Company co-founder teases, along a kitchen shot captioned with, "getting ready with the cupcakes and cake."

The birthday girl matched the watermelon decor in a pink and green one-piece swimsuit as she enjoyed shave ice, helped her mom cheer on guests during a watermelon eating contest, and listend to her friends' performance of "Happy Birthday to You."

"Happy Birthday Havie—this is 5!" Alba captioned a sweet photo of her daughters sitting poolside with a friend. We're wishing Haven a terrific fifth year.