A Donna and Eric from That ’70s Show photo kicks off this week’s #ThrowbackThursday.

Lauren Prepon shared a photo of herself with her That '70s Show co-star Topher Grace.

Via Twitter: @LauraPrepon

Sarah Michelle Gellar celebrated the 19th anniversary of the premiere of Buffy the Vampire Slayer by posting this pic from her Sunnydale High School days.

Sarah Michelle Gellar / Via instagram.com

Lena Dunham posted this adorable photo of herself enjoying a Coca-Cola.

Lena Dunham / Via instagram.com

Seth Green took us back to 1999, when he filmed this scene with Jerry Springer for Austin Powers: The Spy Who Shagged Me.

Seth Green / Via instagram.com

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