Jennifer Aniston has opened up about her fiancé Justin Theroux, praising his paternal instincts.

The actress spoke about Theroux in an interview with Glamour magazine conducted by her We're the Millers co-star Jason Sudeikis.

She said: "I know Justin, for instance, has extremely amazing paternal instincts.

"Because [growing up] he had to sort of become the parent. I think when you have to become the parent when you're a younger person, you learn those instincts."

The star also spoke about the need to accept who you are in order to be a happy person.

Aniston explained: "And once you meet yourself, and truly love yourself, then you attract that. And look - I mean, the two of us have found these two, beautiful, loving, open people."