Posting a collage of her most memorable moments with her man, the actress, 32, wrote, "To another #5yrs #HappyAnniversary."
In another montage, she referred to the film producer as "#mylove+myheart+mybestfriend+myconfidant ur my everything, I love u."
Warren, 34, made sure his wife didn't go unnoticed either, tweeting, "5 years ago today I married my soul mate @jessicaalba & my hair immediately turned grey. Go figure." He added, "#truelove #happyanniversary."
The couple, who met while filming Fantastic Four, have two daughters together, Honor, 5, and Haven, 3. They married in Beverly Hills in May 2008 after three years of dating.
In a iVillage post in May 2012, The Honest Life author explained what makes their union successful.
"Making time for our relationship in our daily routine -- even though it's surprisingly predictable and may not seem as spicy as our spontaneous pre-kiddo days -- [it] really helps keep the romance alive," she explained.