Happy 39th the Corey Gamble! The Kardashian clan and FofKs were all in attendance to support Kris Jenner's much-younger boy toy on the occasion of his birthday last night after the People's Choice Awards.

The group gathered at celeb hotspot Giorgio Baldi in Santa Monica -- with Tommy Hilfiger, Rick and Kathy Hilton, Faye Resnick, Kim and Kanye, and the rest of family, of course, there to celebrate.



So it was double-duty for the KarJenner's last night, after the picked up the People's Choice Award for Best Reality TV Show and Khloe for Best Reality TV Star ... then it was off to Corey's party -- hey, they were all already dressed up; may as well get some use outta those expensive clothes, right?!

Meanwhile, Kim was generous enough to take selfies with fans after the awards show. Khloe didn't get such a warm reception from fans after she won her prize. Find out why, HERE!