Kanye popped the question to his girlfriend on Monday (21 October) by projecting the words 'please marry me' onto a big screen at a baseball park he'd rented just for the occasion.
Kim's excited big sister Kourtney tweeted a picture of the grand proposal the following morning, adding the caption: "She said YES!"
Kourtney didn't give us any other info or pictures, so there's no word yet on whether Kanye got down on one knee, whether Kim cried or, almost most importantly, what Kim was wearing!
We do know, however, that Kanye proposed in front of all Kim's friends and family, who had gathered at the AT&T Stadium in San Francisco to mark her 33rd birthday. He's said to have presented her with a 15-carat diamond ring. Nice!
The couple were long-time friends before getting together in 2012. They welcomed their first child together, daughter North West, in June 2013.
Kim has yet to comment on her exciting news but her mum Kris Jenner confirmed the proposal earlier today, telling E! News that the newly-engaged pair are a match made in heaven. It's thought Kanye asked Kris for permission.
Meanwhile, Kim's sister Khloe alluded to the engagement via Twitter earlier today, writing: "Wow! Am I dreaming? Tears of joy!"
Kim has been married twice before. Her first marriage was to music producer Damon Thomas when she was just 19, but that ended three years later. In 2011 she was famously married to basketball player Kris Humphries for just 72 days before filing for divorce.
The engagement is a bit of good news for the Kardashian clan who have been rocked by less than happy claims in recent weeks. Kris announced earlier this month that she'd split from husband Bruce Jenner after 22 years of marriage, while Khloe's marriage to Lamar Odom is said to be on the rocks.
What will Kim and Kanye's wedding be like? Check out Reveal's predictions!
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Copyright: Instagram Mark Wright