The couple are currently enjoying a New Year break on the tropical island, and it has now been made even better!
Ashlee, who is the sister of Jessica Simpson, shared her exciting news with fans on Twitter last night (13 January).
Alongside a sunny and romantic picture of herself and Evan, the US singer gushed: "My baby love and I are ENGAGED!!! Hallelujah Hawaii!!!!!"
Ashlee is flashing her huge diamond engagement ring in the photo, and it's a fair sized rock to say the least. Good work, Evan!
Evan is an up and coming actor and will star in forthcoming movie The Hunger Games: Mockingjay - Part 1. He is the son of superstar singer Diana Ross.
The couple got together in June 2013 and, one month later, Ashlee and Evan made their relationship public by attending one of Jessica's fashion launches in New York.
In 2008, Ashlee married Fall Out Boy musician Pete Wentz and later gave birth to their son, Bronx.
In early 2011, Ashlee filed for divorce citing irreconcilable differences. This was finalised in November that year.
More couple who got engaged in 2014:
Copyright: Instagram kayascods