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Hilary Duff Twitter

Twitter

Can you believe little Luca Comrie is already 2 years old?!

Hilary Duff's only child is celebrating the big 0-2 today, and the proud mama took to Twitter in honor of her little one's big day to share an adorable photo collage with her followers to show off her sweet son.

"You make each day better and better Luca Cruz .... The brightest star," Duff captioned the pic-framed photo, which features a slew of precious pics of little Luca, including a shot with the singer's ex Mike Comrie.

And whether Luca is playing soccer in the backyard, making faces with his mommy or driving around in his toy car, this little man sure knows how to kill us with cuteness, although he is indeed growing up far too quickly!

Hilary Duff, Mike Comrie, Luca

Twitter

The blond beauty is no stranger to showing off her son on social media, as the proud mama is constantly sharing pics with her loyal fans and followers. The 26-year-old star most recently took to Twitter to share a shot of Luca enjoying a little playtime at home, where things apparently got a little messy as the mother of one posted a photo of her son covered in his "morning war paint" just two days prior to his second birthday.

In January, Duff has also made headlines when a rep for the actress announced her split after three years of marriage from former NHL hockey player Mike Comrie. The two have maintained an incredibly amicable relationship for their son, most recently enjoying a "modern family" vacation.

No word yet how the trio is celebrating, but here's hoping Hilary shares a pic!

Happy birthday, Luca!