Ain't No Party Like a Grammys Preparty!

With the Grammy Awards approaching on Sunday, it's no surprise to see the stars aligning in Los Angeles for this year's round of preshow parties. Just last night saw Rihanna, Miley Cyrus, Taylor Swift, and tons of other talented entertainers looking chic.

Rihanna went through two spectacular outfits yesterday, combining two sets of stripes for Roc Nation's pre-Grammys brunch before changing into a dramatic yellow gown for an evening gala. Taylor and Miley both shook up the red carpet at the same event, where Taylor chose one of Zuhair Murad's sparkly cocktail dresses and Miley dressed up in an all-pink look from Calvin Klein.

Earlier on the preparty circuit, singer Iggy Azalea donned a dramatic, long blue gown with a plunging neckline for the annual Friends 'n' Family Grammys Weekend Dinner, and Paris Hilton paired a sheer black dress with the hottest accessory of the moment, an ear cuff. And at the MusiCares Person of the Year Awards, Lady Gaga chose a white gown with a keyhole neckline.

A look at the most stylish stars who've attended Grammys preparties below.

Rihanna at the Pre-Grammys Gala
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Rihanna at the Pre-Grammys Gala

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 at the Pre-Grammys Gala
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Miley Cyrus at the Pre-Grammys Gala

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 at the Pre-Grammys Gala
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Taylor Swift at the Pre-Grammys Gala

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

Joanna Krupa at the Friends 'n' Family Pre-Grammys Party
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Joanna Krupa at the Friends 'n' Family Pre-Grammys Party

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

Chrissy Teigen and John Legend at Nielsen's Pre-Grammys Party
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Chrissy Teigen and John Legend at Nielsen's 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.

Hannah Bronfman at Nielsen's Pre-Grammys Party
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Hannah Bronfman at Nielsen's Pre-Grammys Party

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

Jennifer Hudson and Jessie J at the Pre-Grammys Gala
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Jennifer Hudson and Jessie J at the Pre-Grammys Gala

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

Jordin Sparks at the OK! Magazine Pre-Grammys Party
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Jordin Sparks at the OK! Magazine Pre-Grammys Party

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

Rita Ora at Roc Nation's Pre-Grammys Brunch
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Rita Ora at Roc Nation's Pre-Grammys Brunch

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

Rihanna at Roc Nation's Pre-Grammys Brunch
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Rihanna at Roc Nation's Pre-Grammys Brunch

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 at the OK! Magazine Pre-Grammys Party
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Lydia Hearst at the OK! Magazine Pre-Grammys Party

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

Alicia Keys at the 2014 MusiCares Person of the Year Awards
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Alicia Keys at the 2014 MusiCares Person of the Year Awards

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

Ciara at the MusiCares Person of the Year Award
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Ciara at the MusiCares Person of the Year Award

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

Lady Gaga at the MusiCares Person of the Year Award
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Lady Gaga at the MusiCares Person of the Year Award

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

Hilary Duff at the MusiCares Person of the Year Award
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Hilary Duff at the MusiCares Person of the Year Award

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

LeAnn Rimes at the MusiCares Person of the Year Award
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LeAnn Rimes at the MusiCares Person of the Year Award

LeAnn Rimes looked lovely in a deep lavender gown.

Victoria Justice at the MusiCares Person of the Year Award
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Victoria Justice at the MusiCares Person of the Year Award

Victoria Justice made this shocking-pink gown work.

Miranda Lambert at the MusiCares Person of the Year Award
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Miranda Lambert at the MusiCares Person of the Year Award

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

Iggy Azalea, T.I., and Rita Ora at the Friends 'n' Family Grammy Dinner
Getty | Lester Cohen

Iggy Azalea, T.I., and Rita Ora at the Friends 'n' Family Grammy Dinner

Iggy Azalea wore a blue long-sleeved dress with a plunging neckline, while Rita Ora went for a golden top and skirt piped with a wide band of white fabric from Alexandre Vauthier Haute Couture.

Hilary Duff at Delta's Grammy Weekend Reception
Getty | Angela Weiss

Hilary Duff at Delta's Grammy Weekend Reception

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

Anna Kendrick at Delta's Grammy Weekend Reception
Getty | Jon Kopaloff

Anna Kendrick at Delta's Grammy Weekend Reception

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

Paris Hilton at Diddy's Pre-Grammy Party
Getty | Lucas Rossi

Paris Hilton at Diddy's Pre-Grammy Party

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

Victoria Justice at Delta's Grammy Weekend Reception
Getty | JB Lacroix

Victoria Justice at Delta's Grammy Weekend Reception

Victoria Justice sparkled like a disco ball in her shift.

Christina Aguilera at Delta's Grammy Weekend Reception
Getty | Chris Weeks

Christina Aguilera at Delta's Grammy Weekend Reception

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 at Delta's Grammy Weekend Reception
Getty | Angela Weiss

Kate Walsh at Delta's Grammy Weekend Reception

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

Lorde at Delta's Grammy Weekend Reception
Getty | Angela Weiss

Lorde at Delta's Grammy Weekend Reception

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

Kaley Cuoco at Delta's Grammy Weekend Reception
Getty | Angela Weiss

Kaley Cuoco at Delta's Grammy Weekend Reception

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