Jennifer Aniston and Justin Theroux have been entertaining their famous friends at their Mexican holiday home.

The couple - who got engaged in August - welcomed John Krasinski, Emily Blunt, Jimmy Kimmel, and Molly McNearney to Cabo San Lucas for a post-Christmas vacation and the three couples have been relaxing by the pool.

A source told Us Weekly: 'They spent the afternoon lounging around and having drinks at Jen and Justin's house. They seemed to all be really good friends and comfortable around each other. Emily was lying in John's lap, and Jen had her arms around Justin. They were there all afternoon until sunset, laughing and having great conversation.'

John, Emily, Jimmy and Molly all flew out for the getaway together from Los Angeles and eyewitnesses at LAX said they were in high spirits at the airport.

An onlooker said: 'The whole group walked out of the Admirals Club lounge and over to the terminal. John's arm was around Emily, and they were smiling - very couple-y and cute.

They're clearly very happy.

'The group looked very excited to be vacationing together.'