'Pretty Little Liars' Star Ashley Benson -- Heroin OD After Philip Seymour Hoffman's Death

Ashley Benson may THINK she's heroin chic ... but we're guessing the prevailing view is that she's heroin creep ... wearing this the day after Phillip Seymour Hoffman was buried.

The "Spring Breakers" star roamed around West Hollywood Saturday in a black T with the words "DJ Heroin" emblazoned on it.

It's especially startling ... because just a few days before she tweeted a pic of Hoffman with the warning, "Don't do drugs."