The two had previously made it Instagram Story official in August.
Here's what the pair shared about their unconventional relationship.
The two-hour season finale of 'The Hills: New Beginnings' airs on Monday, Sept. 9 at 9 p.m. ET/PT on MTV.
'The Hills: New Beginnings' star opened up in a new interview with 'Cosmopolitan.'
The reality star also slams Kaitlynn for her outrage over the ‘open marriage’ rumors on ‘The Hills.’
Kaitlynn and Brody address open marriage rumors on the latest episode of 'The Hills: New Beginnings.'
The reality star found herself the subject of gossip after Brody talked about their marriage publicly.
The pair went Instagram official earlier this week.
ET has all the details on which couples partied together at the VMA after-parties, including a new Gigi Hadid and Tyler C. spotting!
Both couples were attending a VMAs after-party.
'That'd be f**king hilarious,' the reality star exclaimed while speaking with ET on the red carpet at the MTV VMAs on Monday.
ET is taking you inside Brody Jenner's 26th birthday bash!
A source confirms exclusively to ET that the two are now very much a couple.
Kaitlynn Carter and Miley Cyrus sent Jenner a joint birthday gift on Wednesday.
