One fan wrote: "She is the spitting image of you!"
While another commented: "Such a beautiful resemblance between you both 💕"
"Looks just like her mummy Beautiful 😍," one more wrote.
Whether she looks like her mother or her former Tennis Champ father Lleyton, 36, she's still too cute!
The last time Hewitt shared pictures of her children was back in January.
The couple also shares two more children, Mia, 11 and Cruz, 8.