Octavia Spencer, Venice Film Festival 2017

Pascal Le Segretain/Getty Images

The 2017 Venice Film Festival is bringing Hollywood's stars to Italy for the premieres of their latest films. The 74th international festival is being held at Sala Grande.

Matt Damon and Kristen Wiig attended the festival Wednesday to promote the movie Downsizing, a science fiction film featuring other notable actors like Christoph Waltz, Jason Sudeikis and Hong Chau. Wiig wore a glitzy, pink Zuhair Murad gown to the red carpet for the screening. 

Amanda Seyfriedand Ethan Hawke were also at the festival for the screening of their film First Reformed, which is being presented in competition. For the red carpet, Seyfried wore a black dress with a colorful bodice and semi-sheer details and sported a wavy ponytail. Hawke opted for a navy suit. 

Rebecca Hall, a jury member, also attended the screening wearing a flowing gown and carrying a gold clutch. 

But these weren't the only stars to make an appearance.

Octavia Spencer attended the festival, as well, to promote the film The Shape of Water. The film was directed by Pan's Labyrinth's Guillermo del Toro and is set to debut this fall. Spencer wore a blue and semi-sheer dress.

For pictures of the celebrity sightings, check out the gallery:

Darren Aronofsky, Michelle Pfeiffer, Jennifer Lawrence and Javier Bardem, Venice Film Festival 2017

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Leslie Bibb & Sam Rockwell, Venice Film Festival 2017

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Jim Carrey, Venice Film Festival 2017

Dominique Charriau/WireImage

Stella Maxwell, Venice Film Festival 2017

Dominique Charriau/WireImage

David E. Kelley & Michelle Pfeiffer, Venice Film Festival 2017

Dominique Charriau/WireImage

Jennifer Lawrence, Venice Film Festival 2017

Dominique Charriau/WireImage

Venice Film Festival, George Clooney, Amal Clooney

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George Clooney, Amal Clooney, Venice Film Festival 2017

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Julianne Moore, George Clooney, Venice Film Festival 2017

Mark Milan/GC Images

Julianne Moore, Venice Film Festival 2017

Stefania D'Alessandro/WireImage

Rowan Blanchard, Venice Film Festival 2017

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Jennifer Carpenter, Venice Film Festival 2017

Jacopo Raule/GC Images

Zosia Mamet, Venice Film Festival 2017

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Rebecca Hall, Venice Film Festival 2017

Vittorio Zunino Celotto/Getty Image

Amanda Seyfried

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Kristen Wiig, Venice Film Festival 2017

Stefania D'Alessandro/WireImage

Octavia Spencer, Venice Film Festival 2017

Pascal Le Segretain/Getty Images

Matt Damon, Venice Film Festival 2017

Mark Milan/GC Images

Ethan Hawke, Venice Film Festival 2017

Pascal Le Segretain/Getty Images

Izabel Goulart, Venice Film Festival 2017

Mark Milan/GC Images

Other movies in competition this year include Mother!, Suburbicon and Human Flow.

For more Venice Film Festival updates, tune in to E! News tonight at 7 and 11, only on E!

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