Lauren Conrad's son isn't so "itty bitty" anymore: The Laguna Beach and Hills "little guy" Liam is officially single digits!

The MTV alum welcomed her first child with husband William Tell exactly one year ago today (July 5), and Lauren has made sure to share some sweet moments from his first 12 months. From his inaugural Halloween (his mama does love to make DIY costumes!) to beach days with his folks (after all, his mom's first moments on this network were strolling in the surf and sand), Liam has had quite the first year (even though there were no field trips to Les Deux, because Les Deux sadly doesn't exist anymore).

Take a look at his growth in the roundup below, and be sure to wish Lauren's boy a happy birthday in the comments!

Those fingers (and also Liam's first official Instagram photo)

Mom and dad admiring their firstborn

Snoozing away -- and probably dreaming about...

...being a lamb at the pumpkin patch

The star of the Tells' first Christmas card

But has Liam been to Paris?

Handmade Valentine from Cupid Liam

Following in his dad's musical footsteps

Best buds with the Easter Bunny

Certainly a better dinner date than some of those awkward 'Hills' ones

Not a bad way to spend a Sunday

Probably the same spot (or close to) the farewell Laguna Beach bonfire

Taking a Father's Day stroll with dad