Ain't No Party Like a Grammys Preparty!

Rihanna looked every inch the good girl gone bad in this billowing yellow Alexandre Vauthier Couture gown with a plunging neckline and a thigh-high slit and a pair of golden Christian Louboutin heels.

Miley Cyrus jumped on stage in a rose cashmere shearling coat and a pink slip dress from Calvin Klein's Pre-Fall 2014 collection.

Taylor Swift wore a sparkly Zuhair Murad dress to the pre-Grammys gala.

Speaking of cutouts, model Joanna Krupa stunned people around the world when she wore this revealing dress to a pre-Grammys party.

Clearly this lady isn't saving the drama for the main event! Chrissy Teigen picked a golden, cleavage-baring dress, while her husband got all dressed up in a classic black suit and tie.

The DJ rocked a shiny gold skirt with a polka-dot red top.

While Jessie J opted for a chic black suit, Jennifer chose a lively multicolored cocktail dress that hugged her curves.

Jordin Sparks chose a dress with a swirling pink and white print for the event.

Rita Ora's otherwise clean, white ensemble was given extra oomph with a skirt and jacket covered in bands of stones and sequins.

Stripes were the word for Rihanna, who chose a striped white shirt and a red-and-white striped skirt (both by Altuzarra) for this event.

Lydia Hearst went with a shiny black cocktail dress with a well-placed cutout detail.

This songstress stood up tall in a black and white dress and a pair of Christian Louboutin pumps.

Talk about borrowing from the boys! Ciara chose a pin-striped look from Lanvin Homme's Fall 2014 collection for this red carpet.

A white gown with a keyhole neckline accentuated this lady's ladylike curves.

We love a one-shouldered jumpsuit — and it turns out, so does Hilary Duff, who accessorized her look with an Oroton clutch.

LeAnn Rimes looked lovely in a deep lavender gown.

Victoria Justice made this shocking-pink gown work.

Miranda Lambert performed in a dress and belt by Mikael D.

Hilary Duff donned a spirited printed dress under a black blazer.

Funny lady Anna Kendrick wore a seriously sweet red-and-blue floral cocktail dress from Topshop.

Paris Hilton pulled a full Jaimie Alexander in this sheer black dress with strategically placed sections of sequins.

Victoria Justice sparkled like a disco ball in her shift.

Christina Aguilera, seen here with Delta executives Glen Hauenstein and Ed Bastian, went for a tougher look with a white leather motorcycle jacket.

Kate Walsh's yellow clutch brought a pop to her blue, black, and gray dress.

Lorde kept it simple in an all-black column dress.

Kaley Cuoco accessorized her dark ensemble with a black-and-white patterned clutch.

Julianne Hough opted for anything-but-basic black.