Jennifer Aniston and Justin Theroux will reportedly get married in December.

The Hollywood couple announced their engagement last month just weeks after Jennifer's ex-husband Brad Pitt popped the question to Angelina Jolie.

Now Jennifer and Justin are rumoured to be planning on tying the knot in a private ceremony in Kenya at the end of this year.

"Both Jen and Justin want a private and intimate wedding, and they love the idea of eloping and marrying abroad," a source told British newspaper The Mirror.

"Kenya will be an amazingly romantic break and the plan is to have some kind of informal blessing while out there. They may well undergo something more formal in LA immediately afterwards."

The couple have allegedly planned a nine-night safari in the country, where they will be staying at a private estate.

However, not all guests will be able to make it if the pair get married abroad including Jennifer's mother.

"Sadly she had a major stroke last year and can't travel if they do elope," the source explained.

"Basically Jen has to choose between her mum and her dream wedding."

Jen and her actor beau began their romance after starring together in the romantic comedy Wanderlust.