Celebs getting starstruck by other celebs.

Tiffany Haddish meets Meryl Streep.
Jack Nicholson surprises Jennifer Lawrence.
Kelly Clarkson and Catherine Zeta-Jones are fans of each other.
Anne Hathaway fangirls over Mariah Carey.
Emilia Clarke loves Matt LeBlanc.
Emma Stone is a Spice Girl fan.
Mark Hamill makes Adam Scott tremble.

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