PIC: Hilary Duff Misses Baby Luca After Date Night

Hilary Duff and Mike Comrie on May 2, 2012. Credit: NGRE/AKM-GSI

Hilary Duff is finding it difficult to leave her baby and it's easy to see why!

The new mom left her son Luca at home Wednesday night to enjoy a date night with husband Mike Comrie -- but it wasn't easy.

Duff, 24, and Comrie, 31, went to a Colplay concert together at the Hollywood Bowl. After the show she tweeted, "So nice to have a night out but we miss monkey!!"

The proud mom shared an adorable new photo of her growing "monkey." Baby Luca is now one month old and getting cuter by the day.

And Channing Tatum's wife, Jenna Dewan-Tatum, agreed! She commented on the photo Duff posted, tweeting, "omg he is so cute I can't take it!!"

Duff tweeted back, "Thanks!! me either!!!"