As described by WHO:
Miley Cyrus and star Liam Hemsworth are engaged to be married after three years of dating, their reps confirm to WHO exclusively.
The rising Australian actor popped the question to US pop singer-actress Miley Cyrus in Los Angeles on May 31, in what a source describes as a “really romantic” proposal.
The Hunger Games star, 22, presented his longtime girlfriend with a 3.5-carat, cushion-cut diamond set in an Art Noveau-inspired gold band from jeweler Neil Lane.
Also, it seems that she is really happy. The evidence is in her tweets. You see, before she got engaged, she was upset over what time she woke up: