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Look who’s three!

In a series of precious family photos, proud mama Hilary Duff shared an Instagram slideshow on Friday to celebrate her son Luca‘s third birthday.

“3 years buddy! 3 beautiful years! You make every minute worth while! We cherish all your firsts and all that is to come. Happy 3rd birthday my love #timesflying #whatayear,” she captioned the flipgram.

The Lizzie McGuire alum, 27, included shots of her soon-to-be ex-husband Mike Comrie and her sister, expectant actress Haylie Duff, in the slideshow.

After five years of marriage, Duff and Comrie, 34, announced their separation in January 2014, and the Younger actress filed for divorce in February 2015.

“I don’t want to sound bitter because I’m definitely not, but I don’t know if people are meant to be together forever,” Duff recently said.

She added: “Things happen over a long relationship that you can’t always fight. A marriage of 20 years, the accomplishment of that must feel really great, but there are also huge sacrifices. I just always want to fight for happiness.”

3 years buddy! 3 beautiful years! You make every minute worth while! We cherish all your firsts and all that is to come ? ?Happy 3rd birthday my love #timesflying #whatayear

A video posted by Hilary Duff (@hilaryduff) on Mar 20, 2015 at 9:33am PDT

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