Hours after news about their engagement broke, Us Weekly said that the model, whose real name is Angela White, planned to change her name to Angela Kardashian.
"She was very excited and loves the ring. She's happy with him and very happy," said a representative.
Rob and Blac got engaged after just a few months of dating. He proposed to her with a 7-carat diamond ring which he co-designed with celebrity jeweller Ben Baller.
"Rob had a couple of small ideas. (Rob) wanted it to be elegant, but still be impressive," Ben told the publication.
Blac proudly showed off the massive sparkler in several Instagram photographs. She also posted a video showing someone wearing a black leather glove while holding the ring and letting us see it twinkling in the light.
"I'm so blessed and honoured to have a good man in my life. I love you, Rob Kardashian," she wrote in the caption.
Rob's famous family has yet to comment on his engagement. Currently, his mother and sisters are enjoying a snowy vacation in Vail, Colorado.(IANS)