The 'Cruel Intentions' star said it was 'a long night.'
Celeb pals including Sarah Michelle Gellar and Chelsea Handler turned out to support the actress.
The actresses both shared a photo to commemorate the day.
Plus, find out what other TV shows and which celebrities are celebrating coffee's big day.
If the 'Buffy' star's life was a movie, we have a feeling she'd want Shannen Doherty to play her.
Happy birthday Charlotte!
#NeverForget
The actress took to social media to address the dark theory about the classic movie.
Does the whole movie take place in Sandy's mind?
The two met in 1997 on the set of 'I Know What You Did Last Summer.'
The actress teased her husband for stealing her heart, saying, 'I got my revenge and took your last name!'
The 'Crazy Ones' actress pays tribute to her late co-star while Williams' daughter takes a social media break.
The actress praised Doherty for showing strength while while she's 'facing the toughest journey of her life.'
The 39-year-old actress took to Instagram to show her friend support during her battle with breast cancer.