Lindsay Lohan dressed up as murdered actress Sharon Tate on Charles Manson’s birthday, and many people are not only wondering why, they’re also hurling angry vitriol at the “Mean Girls” star.

On Sharon Tate’s last day alive, ... Tate was planning a birthday party for him 10 days later, and she told him she would split from him if he hadn’t returned by then.

Days before her 25th birthday, Tate wed her Fearless Vampire Killers director and co-star Roman Polanski, then 34, in a London ceremony at the Chelsea Register Office on Jan. 20, 1968.

Sharon Tate's marriage to Roman Polanski. Days before her 25th birthday, Tate wed her "Fearless Vampire Killers" director and co-star Roman Polanski, then 34, in a London ceremony at the Chelsea ...

Tate and four others were killed at her home on Charles Manson's orders in August 1969. The convicted murderer celebrated his 81st birthday the same day as Lohan's post, causing many to berate the ...

On Sharon Tate’s last day alive, ... Tate was planning a birthday party for him 10 days later, and she told him she would split from him if he hadn’t returned by then.

Debra Tate is supporting Kate Bosworth’s take on her sister Sharon after slamming Hilary Duff for playing her — as well as Quentin Tarantino’s next movie, which centers around her grisly murder.

Lindsay Lohan dressed up as the late Sharon Tate for Charles Manson’s birthday on Thursday, Nov. 12. Sharon Tate was murdered in 1969 ...

Sharon Tate’s horrific murder has been recounted numerous times — but never like this. “The Haunting of Sharon Tate,” which opened in theaters Friday, reimagines the 1969 night when Tate ...

Which brings us to Sharon’s sister Debra Tate. Surprisingly, given her past comments (which, woof, we’ll get to in a moment), Debra seems here for Margot taking on the part.

Sharon Tate rode into the 1960s on an All-American missile and defined the decade in a perfect frame. ... While she shares the same birthday of another celebrity taken too soon, ...

Tate was planning a birthday party for him 10 days later, and she told him she would split from him if he hadn’t returned by then. ... What we know about the last day Sharon Tate was alive.