She can't stop -- and she won't stop -- showing off her gorgeous gams!

On Sunday Miley Cyrus grabbed juice in Malibu for herself and fiance Liam Hemsworth while he waited in the car. Not only was Miley dressed totally normal, but she wasn't wearing an ounce of makeup -- and she looked great!

We're not QUITE sure what's going on with the two as far as wedding plans, but they're clearly very happy together, and she's been wearing her engagement ring. We're thinking these two lovebirds are going to elope somewhere tropical this winter, but it's just a hunch...