Happy Father's Day! Whether you're a dad or honoring your own, being a father is no small feat. And speaking of no small teat, let's celebrate by counting down the hottest celebrity progeny of famous fathers. For example, Papa John Phillips begat the elfin, sexy Bijou Phillips, and Aerosmith frontman Steven Tyler helped create lush-lipped skinsation Liv Tyler. Let's salute these creative dads and the nude beauties they spawned!