The Hollywood star announced her proud news on Facebook by posting a cute snap of Honor showing off the noticeable gap in her front teeth and holding up a tiny plastic bag with the missing tooth in it.
Jessica wrote: "My baby is so big! Lost her first tooth!!!"
We wonder how much money she received from the tooth fairy?!
Honor is Jessica's eldest child with husband Cash Warren, as the couple also have a two-year-old daughter, Haven.
Although the 32-year-old actress is constantly busy with her business ventures and various film roles, she still manages to fit in all of her mummy duties and is often seen running errands with Honor and Haven by her side.
Most recently, her work commitments have caused her to hang out with fellow movie star and the former James Bond, Pierce Brosnan.
Pierce uploaded a sweet photo of himself sat next to Jessica sat in a pair if directors chairs on the set of their upcoming film, How To Make Love Like An Englishman.
While the suave Irish actor was seen wearing a smart suit, his co-star sported a pretty patterned blazer, some black skinny jeans and a pair of stilettos.