Miley Cyrus and Liam Hemsworth started their 2013 with a vacation as they jetted to Costa Rica last week in time to celebrate his 23rd birthday on Jan. 13. How sweet!

The engaged couple was joined by Liam's older brother Luke, his wife Samantha and their three kids as they hiked, frolicked and soaked up the sun in the tropical locale.

Looks like this trip is just what they needed!