X17 XCLUSIVE - Nicole Richie Has Her Hands Full With Sparrow And Harlow

TOO CUTE!!! Okay, these are some of the absolute cutest pics we've seen in a long time.

Nicole Richie took Sparrow and Harlow to a children's birthday party at Cafe Med yesterday on Sunset Plaza in West Hollywood and the whole crew was dolled up!

Nicole was sporting her Winter Kate cut-out booties; Sparrow had on blue-and-white sailor stripes, and Harlow was sporting an adorable denim vest.

And this was like the hippest of all baby luncheons -- the moms and kids broke out into an impromptu disco in the parking lot! Check out the video ...





And you HAVE to see ALL the pix in the gallery below -- Adorbs!