Faris and McPhee celebrated the movie's 10th anniversary in August.
"Ten years ago -- I couldn't believe I was wandering around the Playboy Mansion wearing this -- I love you guys and thank you for your love," Faris captioned a photo on Instagram of herself in an all-pink ensemble.
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"Today makes the 10 year anniversary of The House Bunny. ICONIC, if I do say so myself," Dennings, who portrayed Harmony, captioned a photo with Faris, Stone and Willis.
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