She appeared to be make-up free and wore a white T-shirt, which had a giant H on it.
The Last Song actress posted a picture with her 'I voted' sticker, to social media.
The star attended the fire station in the exclusive neighbourhood, which offers curbside voting.
The special service is usually offered in a few locations to voters with a disability or for those who can't stand in line.
'Any voter who cannot reach the voting area at the polling place because of architectural barriers or physical limitations may request to vote "curbside" (outside of the polling location). A pollworker will bring a ballot and a voting device to the voter, assist the voter if necessary and place the voter's ballot in the ballot box' LAvote.net explains.
Miley is one of a number of stars to share their eagerness to vote with social media followers.
From New York City to Los Angeles, stars such as Taylor Swift, Kate Hudson, Nicole Kidman and Anne Hathaway took to social media to show themselves heading to the polls.
Some shared who they were voting for, while others just urged fans to make it to the polls - no matter their political allegiance.
However, they all appeared to have stood in line - with even Hillary Clinton and Donald Trump walking inside a polling place themselves to cast their vote.