By Allie Caren
You might know her as Lizzie McGuire, but actress and singer Hilary Duff is all grown up now!
She’s still acting, but she has another new, more-permanent role: mom.
Duff’s son, Luca, is 4 years old. And from the looks of it, she just can’t get enough of him.
“He only makes every day matter so much more and the joy that I feel, the purpose, everything is so much more heightened,” Duff, 28, told TODAY.
Duff recently got divorced from Canadian retired ice hockey player Mike Comrie.