Dimitrios Kambouris/Getty Images for GQAs Hollywood continued to reel over Cory Monteith's shocking death, more details surfaced regarding the circumstances of his passing.
In the midst of that tragic news, Ellen DeGeneres mourned the death of a cancer-stricken teen.
Fortunately, there was also lighter news to be had in Hollywood.
Among other stories, Adam Levine tossed out his bachelor card and announced his engagement to girlfriend Behati Prinsloo.
Take a look at the other stories that topped our five biggest headliners of the week.
Ellen DeGeneres Mourns Death: The talk show host revealed the news that 13-year-old CoverGirl star Talia Castellano lost her six-year battle with neuroblastoma Tuesday. The charismatic cancer-stricken teen, who posted makeup tutorials on YouTube, was a guest on The Ellen DeGeneres show recently and talked about her condition. "This year I met a very special girl, and today we lost her," DeGeneres said. "Sending my heart to Talia's family. I'm so sad."
Cory Monteith's Cause of Death Revealed: Days after the Glee star was found dead in his Vancouver hotel room, a coroner revealed that Monteith had died of an overdose referred to as mixed drug toxicity, with heroin and alcohol among the substances found in his body.
Ralph Macchio Doesn't Age: The 51-year-old Karate Kid star--who never looks like he's aged--stepped out in NYC--to support his 21-year-old daughter Julia at the premiere of her new film, Girl Most Likely.
Adam Levine Is engaged: The Voice judge popped the question to 24-year-old Victoria's Secret model Behati Prinsloo last weekend in Los Angeles. Levine and Prinsloo started dating about a year ago, but split several months ago before deciding to get back together for good.