She captioned her post: "I SAID YES!!!! @lamarodom #mrsparrodom #lamarandsabrina (sic)"
Lamar recently described his relationship with Sabrina as the "most serious and committed" he had ever been in and admitted he was "tired" of being asked about his ex-wives Khloe Kardashian and Lisa Morales - with whom he has 21-year-old daughter Destiny and 17-year-old son Lamar Jr. - because he's in a different phase of his life now.
Posting a picture of himself and Sabrina embracing, he wrote on Instagram: "The look on @getuptoparr face is how she makes me feel everyday. Outside of my daughter, this is the most serious and committed relationship I've ever been in with a woman. I'm tired of people asking me questions about my ex's based on old interviews and old comments! I said what I said then based on where I was in life at that time. I was young, wasn't sober and going through a lot. All of that is different now. I'm at where I want to be at! (sic)"
And Lamar has the support of his beau too, as she commented on the snap to praise him for his actions.
She wrote: "You've proven all you needed to prove to be baby! I know the truth and what's real and so does everyone around us. If I'm good then we good. That's it! Now hurry back from Montreal because I miss you (sic)"