Miley Cyrus Peaces Out w/ Mom & Sis After Parents Divorce

6/16/2013 12:58 AM PDT

Miley Cyrus Peaces Out With Mom ... After Parents Divorce

The Cyrus women stick together -- a fact made clear when Miley Cyrus posted a "look how happy we are pic" with her mom and sister ... just days after her mom filed for divorce.

Miley tweeted the pic of herself, younger sis Noah and mom Tish Cyrus riding in the back seat of car sporting a peace sign and smiles, with the caption, "The baddest bitches in the world."

TMZ broke the story ... Trish pulled the plug on her 19-year-marriage to Billy Ray Cyrus earlier this week. That same day Miley angrily tweeted at her dad, "Since your text and email obviously aren't working would you like to talk like this?"

Bright side ... she did wish him a happy Father's Day, or in her words, "Happy daddy day."