Tiffany & Co. Rodeo Drive Store Event: Photos Of Ariana Grande Surprise Performance, Liam Hemsworth, Jennifer Garner, Halle Berry

Jennifer Garner, Reese Witherspoon and Halle Berry celebrated the unveiling of the renovated Tiffany & Co. Beverly Hills store on Oct. 13. Frederick M. Brown/Getty Images
The "Modern Family" bombshell wore a black strapless dress featuring a layered polka dot bodice from Cushnie et Ochs' Resort 2016 collection. She finished up her look with a $130,000 gold and diamond fringe necklace from the Tiffany Masterpieces collection.Frederick M. Brown/Getty Images
On hand to perform at the event, the singer check out some of the luxury Tiffany jewels while wearing Ariana Grande performed at the event wearing a La Perla Fall 2016 black top styled with black tapered leg trousers. She finished up with her signature ponytail & bangs and a $250,000 necklace, along with a Tiffany Victoria diamond bracelet and ring.  Handout/Getty Images
The Oscar-winner took cue from the guys and stepped out in an Alexander McQueen two-piece suit with an sheer stripe Balmain shirt underneath. Her look was accessorized with Tamara Mellon "Pistol" black patent pumps, two necklaces, earrings and a prism ring from the Tiffany Masterpieces collection.Frederick M. Brown/Getty Images
"The Hunger Games" hunk donned a Dolce & Gabbana suit and a watch from the Tiffany CT6 collection. Frederick M. Brown/Getty Images
The bubbly blonde actress wore a black wide-leg, key-hole halter jumpsuit and a pink sapphire, rubellite and diamond $425,000 Tiffany Schlumberger bracelet and gold and diamond earrings from the Tiffany Masterpieces collection. Frederick M. Brown/Getty Images
The "Miracles From Heaven" actress kept her look classic with a black top and skirt by Lanvin, a metallic box clutch, Casadei black ankle strap pumps and $1,675,000 worth of jewels, including a necklace, bracelet and two rings, all from the Tiffany Masterpieces collection.Frederick M. Brown/Getty Images
The "Deepwater Horizon" star arrived wearing a Cushnie et Ochs Spring 2017 pink sleeveless wide-leg jumpsuit which she styled with an Cinq a Sept coat, an Edie Parker "Jean" magnetic clutch in taupe pearlescent, Brian Atwood nude satin sandals, a $195,000 diamond necklace from the Tiffany Masterpieces collection, a $135,000 gold and diamond bracelet and a ring with a pink tourmaline and diamonds.Frederick M. Brown/Getty Images
The "10,000 BC" actress wore a Monique Lhuillier Spring 2017 metallic mint Chantilly lace midi-dress with cut out shoulders and flared skirt. She topped off her look with silver metallic sandals and diamond and aquamarine Tiffany jewels.Frederick M. Brown/Getty Images
The "Wonder Woman" star struck a pose in a sleeveless black sequin and floral Dolce & Gabbana cocktail dress which she accessorized with Rupert Sanderson pumps and a red Amanda Pearl clutch. She also added a diamond bracelet and two Tiffany rings.Frederick M. Brown/Getty Images
The "Baordwalk Empire" actor was perfectly polished in a pinstripe suit and a watch from the Tiffany CT6 collection. Frederick M. Brown/Getty Images
The "Heroes" actress was pretty in pink wearing a Monique Lhuillier Spring 2016 strawberry strapless ottoman organza color-block dress with silver platform sandals. Frederick M. Brown/Getty Images
The LA Galaxy athlete rocked a subtle plaid printed suit and watch from the Tiffany CT6 collection. Frederick M. Brown/Getty Images
The "American Horror Story" Hotel" star looked dreamy in a dapper suit and a watch from the Tiffany CT6 collection. Charley Gallay/Getty Images