See Heidi Klum, Stephen Baldwin, Tamera Mowry and More Celebrities Party for PEOPLE's 50th Birthday in L.A.

Stars showed out for PEOPLE's 50th birthday event at The Chain House in Los Angeles

<p>Axelle/Bauer-Griffin/FilmMagic (3)</p> Heidi Klum, Stephen Baldwin and Tamera Mowry.

Axelle/Bauer-Griffin/FilmMagic (3)

Heidi Klum, Stephen Baldwin and Tamera Mowry.

A host of celebrities are helping PEOPLE commemorate a major milestone in Los Angeles.

On Friday, Sept. 13, Heidi Klum, Stephen Baldwin, Tamera Mowry and more arrived at pop-up restaurant and event venue The Chain House to celebrate 50 years of PEOPLE.

This year, the brand looked back on its five decades of celebrity and human interest coverage, dating back to its first issue on March 4, 1974, when actress Mia Farrow was on the cover.

As stars hang out with PEOPLE for its 50th anniversary, take a look at all the attendees at the event, which was sponsored by Carvel, Absolut and Clinique.

Heidi Klum

<p>Axelle/Bauer-Griffin/FilmMagic</p>

Axelle/Bauer-Griffin/FilmMagic

Stephen Baldwin

<p>Axelle/Bauer-Griffin/FilmMagic</p>

Axelle/Bauer-Griffin/FilmMagic

Tamera Mowry

<p>Axelle/Bauer-Griffin/FilmMagic</p>

Axelle/Bauer-Griffin/FilmMagic

Jonathon Johnson and Jenn Tran

<p>Elyse Jankowski/Getty </p>

Elyse Jankowski/Getty

Rachel Lindsay

<p>Elyse Jankowski/Getty </p>

Elyse Jankowski/Getty

Harvey Guillen

<p>Axelle/Bauer-Griffin/FilmMagic</p>

Axelle/Bauer-Griffin/FilmMagic

Joey Graziadei and Kelsey Anderson

<p>Axelle/Bauer-Griffin/FilmMagic</p>

Axelle/Bauer-Griffin/FilmMagic

Tallulah Willis

<p>Axelle/Bauer-Griffin/FilmMagic</p>

Axelle/Bauer-Griffin/FilmMagic

James Neil and Taylor Owen

<p>Elyse Jankowski/Getty </p>

Elyse Jankowski/Getty

Shane Gustafson, Taylor Owen, Zachary Neal and James Neal

<p>Gonzalo Marroquin/for People Magazine </p>

Gonzalo Marroquin/for People Magazine

Chazlyn Yvonne

<p>Elyse Jankowski/Getty </p>

Elyse Jankowski/Getty

Keltie Knight

<p>Elyse Jankowski/Getty </p>

Elyse Jankowski/Getty

Toni Trucks

<p>Elyse Jankowski/Getty </p>

Elyse Jankowski/Getty

Gangster Granny and Ross Smith

<p>Elyse Jankowski/Getty </p>

Elyse Jankowski/Getty

Nikki DeLoach

<p>Gonzalo Marroquin/for People Magazine </p>

Gonzalo Marroquin/for People Magazine

Chris Colfer

<p>Axelle/Bauer-Griffin/FilmMagic</p>

Axelle/Bauer-Griffin/FilmMagic

Ronald Gladden and Tori Gentile

<p>Gonzalo Marroquin/for People Magazine </p>

Gonzalo Marroquin/for People Magazine

Rachel Lindsay, Justin Sylvester, Tamera Mowry and Adam Housley

<p>Gonzalo Marroquin/for People Magazine </p>

Gonzalo Marroquin/for People Magazine

Justin McGoldrick, Benjamin Norris and guests

<p>Chelsea Lauren/for People Magazine</p>

Chelsea Lauren/for People Magazine

Kayla Ewell, Tanner Novlan and Rachel Lindsay

<p>John Salangsang/for People Magazine</p>

John Salangsang/for People Magazine

Heidi Klum

<p>Gonzalo Marroquin/for People Magazine </p>

Gonzalo Marroquin/for People Magazine

Emma Caulfield Ford

<p>Axelle/Bauer-Griffin/FilmMagic</p>

Axelle/Bauer-Griffin/FilmMagic

Hiroyuki Sanada

<p>Axelle/Bauer-Griffin/FilmMagic</p>

Axelle/Bauer-Griffin/FilmMagic

Sam Asghari

<p>Axelle/Bauer-Griffin/FilmMagic</p>

Axelle/Bauer-Griffin/FilmMagic

Christine Chiu

<p>Axelle/Bauer-Griffin/FilmMagic</p>

Axelle/Bauer-Griffin/FilmMagic

Mayan Lopez

<p>Axelle/Bauer-Griffin/FilmMagic</p>

Axelle/Bauer-Griffin/FilmMagic

Mai Whelan

<p>Axelle/Bauer-Griffin/FilmMagic</p>

Axelle/Bauer-Griffin/FilmMagic

Neil Vogel, Charlotte Triggs, Wendy Naugle, Stacy Nathan, Leah Wyar and Jo Bray

<p>Gonzalo Marroquin/for People Magazine </p>

Gonzalo Marroquin/for People Magazine

Justin Sylvester

<p>Chelsea Lauren/for People Magazine</p>

Chelsea Lauren/for People Magazine

Aba Arthur

<p>Gonzalo Marroquin/for People Magazine </p>

Gonzalo Marroquin/for People Magazine

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