If there’s anyone Philip Seymour Hoffman’s partner, Mimi O’Donnell, can relate to, it’s probably Hollywood actress Michelle Williams. The “Blue Valentine” starlet reportedly visited the grieving costume designer on Thursday.

The 33-year-old felt the tragic sting of accidental overdose when her estranged partner Heath Ledger passed away in 2008. Like Hoffman and O’Donnell, Williams and the Australian actor shared a child: Matilda. Williams co-starred with PSH in "Synecdoche, New York" in 2008, which is the same year her ex-partner was found dead in his apartment from an accidental overdose of prescription medication.

According to TMZ, Williams was just one of Hollywood’s elite who came to Hoffman’s NYC apartment to pay their respects. Joaquin Phoenix and his girlfriend, Allie Teilz, stopped by. Like O’Donnell and Williams, Phoenix unfortunately is no stranger to losing a loved one to substance abuse. Phoenix famously lost his brother River, who overdosed on a mixture of cocaine and heroin in 1993. Phoenix worked with PSH on 2012’s “The Master,” which was nominated for three Oscars.

Entertainmentwise added that Justin Theroux, Jennifer Aniston’s fiancé, and “Blue Jasmine” star Cate Blanchett also didn't let New York’s harsh weather prevent them from paying their respects to Hoffman, who was found dead with a hypodermic needle still in his arm at his West Village apartment. He was 46.

Though it’s widely believed Hoffman died from a drug overdose, autopsy reports have come back “inconclusive.” The New York Police Department has arrested four people who it believes might have been responsible for selling PSH the drugs that provided his last and lethal high.

Robert Vineberg, one of the men arrested, is said to be one of David Bowie’s former musicians. Vineberg reportedly worked on Bowie’s “Let’s Dance” album. When Vineberg was asked if dealt drugs to Hoffman, he apparently replied, “No, I did not.”

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