Superman to Spidey -- Up Your Butt!! 1/14/2008 2:45 PM PT Kate Hudson and Chris Robinson's son Ryder just turned 4 years old. There's something about his birthday cake -- we're just sayin'. See Also Kate & Chris Make Nice-NiceKate Hudson -- Magically Resistant to Cold Share on Facebook Share on X Kate Hudson We're Just Sayin' Paparazzi Photo