Rob Kardashian and Blac Chyna are engaged.

Blac Chyna

Blac Chyna

The 27-year-old model - who has been dating the 'Keeping Up With The Kardashians' star for three months - announced the happy news on her Instagram account, admitting she felt "blessed and honoured" to have Rob in her life.

Sharing a video of the huge diamond ring shimmering in the light, she gushed: "I'm so blessed and honored to have good man in my life, I love you @robkardashian ! #7carats #VVS @benballer (sic)"

Meanwhile, Blac's pal Amber Rose has taken to social media to congratulate her "sister" on the engagement.

Captioning a picture of the happy couple, she wrote: "Congratulations to my Family @blacchyna and @robkardashian!!! Please don't let nothing or no one tear u guys apart! I never seen my sis so happy and I couldn't be more happy for her!

"Sometimes we find love in the strangest places. Lol God Bless you 2! Now let's get this wedding together so y'all can start making some babies #TrueLove #putaringonitsouknowitsreal #BlacRob (sic)"

Meanwhile, Blac previously hinted she wanted to marry and have children with the 29-year-old sock designer.

She told fans at the time "Rob I am not playing with you, I want my eggs cracked. That means I wanna have a baby. I want my name dropped. That means I wanna be married."