I think these guys deserve the title of 'Cutest Family Ever.'

Little Kingston is so adorable. Gwen and Gavin took their son to the Santa Monica Beach during yesterday's hot afternoon in LA.

Kingston had fun splashing in the water and seeing the sites - and even had a little picnic on the sand.

Something tells me that while that kid is precious now, his parents are going to have their hands full before too long -- especially with another little Rossdale on the way.