(Image source from: Kanye-Kim betrothed)

Surprise, surprise! Just a week after Kanye West  claptrapped marriage as an outdated institution,  the hip-hop artist seems to have undergone a change of heart.

Kanye West completely floored Kim Kardashian by pulling off a huge birthday surprise that our birthday girl was least expecting for sure!

West, known for his lavish display of love, rented out an entire baseball stadium for a whopping $35K to host a super birthday bash. Not just that, he flew Kim all the way to San Francisco, blindfolded her, and whisked her off to AT&T ballpark where a full orchestra was present, playing Lana Del Rey's "Young and Beautiful",one of Kim's all-time favorite songs.

But then Kanye did what everyone least hoped for! He went down on his knees in the middle of the field and popped her the big question along with a 15 carat diamond ring. And Kim darling was only too happy to accept.

“The engagement comes 4 months after Kim and Kanye's daughter North was born -- and 18 months after they went public as a couple,” writes a tabloid.

For Kim, who turned 33rd this Monday, it will be her third walk down the aisle and Kanye's first.

AW: Suchorita Dutta Choudhury