(Us Weekly) - Kim Kardashian is getting married, AGAIN! Kanye West popped the question on her 33rd birthday Monday night, and the rapper, 36 pulled out all the stops for the surprise proposal.

West proposed in front of Kardashian's family and friends at AT&T Park in San Francisco. He projected "pleeease marry meee!!!" onto the stadium screen for everyone to see, here's an image of it here:

And, the important part, THE RING! It's a 15-carat diamond ring by celebrity jeweler Lorraine Schwartz. In comparison, the ring Kris Humphries gave Kim featured a 16.21 carat center diamond and two 1.8 carat side diamonds. Check out the rock that Kim hair stylist instagrammed:

Credit: Courtesy of Clyde Haygood

Kim's sister Khloe put her reaction on Twitter late last night: