What Reese Witherspoon, Jennifer Garner, and Halle Berry Wore to Party at Tiffany's

Tiffany & Co. celebrated its renovated Beverly Hills shop last night, with a party that brought together former Legally Blonde costars (Elle Woods and Brooke Wyndham, specifically), gave Ariana Grande the opportunity to do her very best Marilyn Monroe impression, and revealed many unexpected friendships (Jennifer Garner and Halle Berry, who knew?) Here, what everyone wore, including the millions in Tiffany's diamonds.

From ELLE