Kate Hudson [1]'s son Bingham Hawn Bellamy celebrates his fifth birthday on Saturday, and the proud mom marked the special occasion with two rare, yet adorable, snaps of Bingham [2] on Instagram. "And with a snap of my fingers, five years flew by.... Happy Birthday Bingo 💫 #MorningSnuggle #5YearsOldToday 🎈 🎂🎉🎈," Kate wrote alongside a photo of them cuddling in bed. The actress is also mother to 12-year-old son Ryder Robinson, and while we hardly ever get to see her kids in the spotlight, she did post another picture featuring her boys and ex-fiancé Matthew Bellamy at the movie theater. Back in May, Kate and her sons popped up at Goldie Hawn's annual Love In For Kids benefit [3] in LA, along with the rest of Kate's genetically blessed family. Check out Kate's sweet posts, then see how she went from almost famous to totally famous, in pictures [4].