The former reality star will walk down the aisle, her rep confirms to PEOPLE.
Another star of The Hills is headed for the altar!
Port, 28, began dating Rosenman, an associate producer from her spinoff series, The City, in 2012 after she split from fellow MTV star Ben Nemetin.
The reality star-turned-designer recently appeared in the CW Seed’s animated series Gallery Mallory.
As for the guest list on her big day, don’t bank on a Hills reunion.
“I think we all kind of went our separate ways once the show ended,” Port has told PEOPLE.
“I’m fine with it, like I’m at peace with it. With me, I never feuded with anyone, and nothing ever ended badly, so it just naturally happened.”