4 stars rocked the best accessory on the Met Gala red carpet

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Blake Lively, Kerry Washington, Olivia Wilde and Emily Blunt all had one thing in common at tonight's Met Gala -- these four ladies had the best accessory you can possibly bring to a red carpet.

A baby bump!

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Stars show off their baby bumps at the Met Gala
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4 stars rocked the best accessory on the Met Gala red carpet

Olivia Wilde attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Emily Blunt attends 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala at Metropolitan Museum of Art on May 2, 2016 in New York City. (Photo by Kevin Mazur/WireImage)
NEW YORK, NY - MAY 02: Emily Blunt and Olivia Wilde attend 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala at Metropolitan Museum of Art on May 2, 2016 in New York City. (Photo by Kevin Mazur/WireImage)
NEW YORK, NY - MAY 02: Kerry Washington attends 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala at Metropolitan Museum of Art on May 2, 2016 in New York City. (Photo by Kevin Mazur/WireImage)
NEW YORK, NY - MAY 02: Blake Lively attends 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala at Metropolitan Museum of Art on May 2, 2016 in New York City. (Photo by Kevin Mazur/WireImage)
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Each of the women already has one little one at home, but excitedly showed off their growing bellies on the red carpet tonight. Olivia Wilde and Emily Blunt walked together, both wearing custom Michael Kors gowns, while Kerry Washington affectionately held her stomach under an incredible Marc Jacobs dress.

Blake Lively was one of the last people to arrive for the Gala this year, wearing a gorgeous pink, flowing Burberry gown. She walked with Christopher Bailey, creative director of the brand.

Click through above to see each of the women with the cutest accessory of the night!

More Met Gala:
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Through the years: A walk down the Met Gala red carpet

Plus, every single red carpet look from the Met Gala:

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Met Gala 2016 arrivals
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4 stars rocked the best accessory on the Met Gala red carpet

Taylor Swift wearing Louis Vuitton to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Kevin Mazur/WireImage)

Zoe Saldana wearing Dolce & Gabbana to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Alicia Vikander wearing Louis Vuitton to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Anna Wintour wearing Chanel Haute Couture to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

Photo: Kevin Mazur/WireImage

Kendall Jenner wearing Versace to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Poppy Delevingne wearing Marchesa to to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

Photo: Doug Peters/EMPICS Entertainment

Blake Lively wearing Burberry to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Kevin Mazur/WireImage)

Beyonce wearing Givenchy the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Kristen Stewart wearing Chanel to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Dylan Penn wearing Diane von Furstenberg to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Matt Baron/BEI/Shutterstock)

Katy Perry wearing Prada to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Madonna attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Kim Kardashian West wearing Balmain to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Solange Knowles attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Rosie Huntington-Whiteley wearing Ralph Lauren to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by John Shearer/Getty Images)

Uma Thurman attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Dimitrios Kambouris/Getty Images)

Nicole Kidman wearing Alexander McQueen to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Dimitrios Kambouris/Getty Images)

Kate Upton attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Idris Elba attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by John Shearer/Getty Images)

Kerry Washington wearing Marc Jacobs to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Kevin Mazur/WireImage)

Amber Heard attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Karolina Kurkova wearing Marchesa to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Kevin Mazur/WireImage)

Emily Ratajkowski wearing Prabal Gurung to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Kevin Mazur/WireImage)

Kate Bosworth wearing Dolce & Gabbana to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Dimitrios Kambouris/Getty Images)

Kate Hudson attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Cindy Crawford wearing Balmain to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Kevin Mazur/WireImage)

Riley Keough wearing Diane von Furstenberg to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Dimitrios Kambouris/Getty Images)

Kylie Jenner wearing Balmain to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Dimitrios Kambouris/Getty Images)

Rose Byrne wearing Ralph Lauren and Bobby Cannavale attend the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Sarah Jessica Parker attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Hailee Steinfeld wearing H&M to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Dimitrios Kambouris/Getty Images)

Anna Ewers wearing BOSS to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Dimitrios Kambouris/Getty Images)

Sienna Miller wearing Gucci to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Kevin Mazur/WireImage)

Lupita Nyong'o attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Lady Gaga attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Rachel McAdams wearing Valentino to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Gigi Hadid wearing Tommy Hilfiger and Zayn Malik attend the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Dakota Johnson wearing Gucci to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Jenna Lyons and Lena Dunham attend 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Kevin Mazur/WireImage)

Jennifer Connelly attends 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Kevin Mazur/WireImage)

Lorde attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Miranda Kerr attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Naomi Campbell attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Dimitrios Kambouris/Getty Images)

Diane von Furstenberg attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Dimitrios Kambouris/Getty Images)

Hannah Davis and Derek Jeter attend the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Michelle Monaghan wearing Rosie Assoulin the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Jemima Kirke wearing Chanel to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Lea Seydoux attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Jack Huston wearing Alexander McQueen to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Kevin Mazur/WireImage)

Bette Midler attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Michelle Williams attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Dimitrios Kambouris/Getty Images)

Bee Shaffer wearing Alexander McQueen to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

Photo: Dimitrios Kambouris/Getty Images

Rita Ora wearing Vera Wang to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Fei Fei Sun attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Dimitrios Kambouris/Getty Images)

Katie Holmes attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Lily Aldridge attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Allison Williams wearing Peter Pilotto to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Evan Agostini/Invision/AP)

Emma Watson wearing Calvin Klein to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Dimitrios Kambouris/Getty Images)

Bella Hadid attends 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Kevin Mazur/WireImage)

Freida Pinto wearing Tory Burch to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Florence Welch wearing Gucci to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Emma Roberts wearing Tory Burch the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Lauren Santo Domingo attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Elizabeth Cordry wearing Dolce & Gabbana to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Kevin Mazur/WireImage)

Adriana Lima attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Karlie Kloss attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Dimitrios Kambouris/Getty Images)

Saoirse Ronan attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Tavi Gevinson wearing Coach to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Brie Larson wearing Proenza Schouler​ to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Amber Valletta attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Nina Dobrev wearing Marchesa to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Julie Macklowe attends 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

Photo by Kevin Mazur/WireImage

Emily Blunt wearing bespoke Michael Kors to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Kevin Mazur/WireImage)

Juno Temple wearing Erdem to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Chloe Grace Moretz wearing Coach to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Dimitrios Kambouris/Getty Images)

Selena Gomez wearing Louis Vuitton to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Kevin Mazur/WireImage)

Lara Stone attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Ciara wearing H&M to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Kevin Mazur/WireImage)

Singer Grimes wearing Louis Vuitton to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Liberty Ross attends 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Kevin Mazur/WireImage)

LaLa Anthony attends 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Kevin Mazur/WireImage)

will.i.am attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Alexander Skarsgard attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Aja Naomi King attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Maria Sharapova wearing Juan Carlos Obando to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by John Shearer/Getty Images)

Nick Jonas attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Dimitrios Kambouris/Getty Images)

Lilliana Vazquez wearing Pamella Roland to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Dimitrios Kambouris/Getty Images)

Demi Lovato attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Alessandra Ambrosio wearing Balmain to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Hailey Rhode Baldwin wearing Louis Vuitton to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

HAIM wearing Rodarte to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Dimitrios Kambouris/Getty Images)

Jessica Hart wearing Azzedine Alaia to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Doutzen Kroes wearing Balmain to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala in Balmain.

Photo by Jamie McCarthy/FilmMagic

Lily-Rose Melody Depp wearing Chanel to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Irina Shayk attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

Margot Robbie attends the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Jamie McCarthy/FilmMagic)

FKA Twigs and Robert Pattinson attend the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

Anna Kendrick wearing Derek Lam to the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala.

(Photo by Larry Busacca/Getty Images)

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