Kris Jenner -- My Kids All Have Big Heads

Kris Jenner celebrated her birthday in Las Vegas with Kim Kardashian, Kendall Jenner, Kylie, Kourtney, Khloe and Rob -- well, sort of.Mama Jenner partied her face off in Sin City for her 59th b-day with new man-squeeze Corey Gamble ... as well as…

Marisa Miller Marisa Tomei Marla Sokoloff Marley Shelton