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On Thursday Hilary Duff stepped out in Beverly Hills, and before running errands she grabbed a cup of coffee at Starbucks. Seeing as it's her son Luca's second birthday, it looks like she's going to need the extra boost to keep up with her little man today!

Hil posted some adorable photos on Twitter, and we're not sure what she and estranged hubby Mike Comrie have planned for their adorable tot, but we're sure she's going to upload more pics later.

This one (which Hil captioned, "You make each day better and better Luca Cruz .... The brightest star" -- awww!) is our personal fav:

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