Jennifer Garner lights up Save the Children Gala in a dreamy strapless gown -- see her stunning look!

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Jennifer Garner is simply stunning!

While stepping out to the fourth annual Save the Children Illumination Gala at The Plaza in New York City on Tuesday, the Miracles From Heaven star turned heads in a posh look fit for a princess.

WATCH: Ben Affleck Opens Up About Co-Parenting with Estranged Wife Jennifer Garner

The 44-year-old actress wore Charlotte Olympia peep-toe pumps with a floor-length gown, which featured a velvet midnight blue sweetheart bodice and a black skirt with cascading side ruffles.

Garner kept her brunette tresses elegantly pulled back with a half-up, half-down 'do, and her dazzling accessories and sweet smile completed her ensemble perfectly.

Classy as always!

Garner, who is a Save the Children Artist Ambassador and Trustee, hosted the star-studded gala, which honored supermodel Iman, Athene, Richard Curtis and Toys "R" Us. Celebrities in attendance included Dakota Fanning, Bridgit Mendler, Jennifer Nettles and Gabriela Hearst.

Before the night's festivities kicked off, Garner opened up to ET about teaching her own children, 10-year-old Violet, 7-year-old Seraphina and 4-year-old Samuel, whom she shares with ex Ben Affleck, about the importance of charity.

See more photos of Jennifer Garner through the years:

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Jennifer Garner through the years
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Jennifer Garner through the years
Jennifer Garner and Scott Foley during 1999 Kid's Choice Awards in Los Angeles, California, United States. (Photo by Jeff Kravitz/FilmMagic, Inc)
Jennifer Garner during Motorola's 2nd Annual Party in Los Angeles, California, United States. (Photo by Sam Levi/WireImage)
Jennifer Garner (Photo by Jim Spellman/WireImage)
65154_281_45 - ALIAS -From J.J. Abrams, the creator of 'Felicity,' comes this thoroughly contemporary, high-octane series. Sydney Bristow (Jennifer Garner) is a vivacious, athletic grad student, who has a not-so-typical after-school job: she's an agent for SD-6, a top-secret division of the CIA. Revealing her secret is verboten, and if there's one rule you don't break -- this is the one. But Sydney breaks it, and suddenly her world is spun terrifyingly sideways: Her boyfriend's life is now in grave danger, and Sydney's in a fight for her own life. She also discovers that her long-estranged father, Jack (Victor Garber), is also SD-6 and that the organization might be covering up a secretly nefarious plan. 'Alias' will air Sundays at 9:00 p.m. on the ABC Television Network. (Photo by Norman Jean Roy/ABC via Getty Images) JENNIFER GARNER
65236_8_19 - ALIAS - 'PARITY' (Photo by Mitchell Haaseth/ABC via Getty Images) JENNIFER GARNER
Bradley Cooper, Jennifer Garner & Martin Vartan of Alias on stage at the 28th Annual People's Choice Awards at the Pasadena Civic Auditorium in Pasadena, California. (Photo by L. Cohen/WireImage)
Jennifer Garner in the Press Room at the 28th Annual People's Choice Awards (Photo by Jeffrey Mayer/WireImage)
Jennifer Garner (Photo by Gregg DeGuire/WireImage)
66104_90 - ALIAS -- 'Alias,' which has been nominated for 11 Emmy awards, returns for an exciting second season in the life of multi-faceted double agent Sydney Bristow (Ms. Garner, Golden Globe Award winner for her role in the series). Traveling around the world. Fighting with the bad guys. Leading a double life. Wrestling with her inner demons. For grad student Sydney, this is a typical day in her life at her not-so-typical after-school job as an agent for SD-6, a supposed black-ops division of the CIA. 'Alias' stars Jennifer Garner, Victor Garber, Ron Rifkin, Michael Vartan, Lena Olin, Bradley Cooper, Merrin Dungey, Carl Lumbly, Kevin Weisman and David Anders. The series airs Sundays from 9:00-10:00 p.m., ET. (ABC/REISIG AND TAYLOR) JENNIFER GARNER
Jennifer Garner during The 54th Annual Primetime Emmy Awards - Arrivals at The Shrine Auditorium in Los Angeles, California, United States. (Photo by SGranitz/WireImage)
LOS ANGELES - FEBRUARY 9: Actress Jennifer Garner arrives at the premiere of 'Daredevil' at the Village Theatre on February 9, 2003 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
Jennifer Garner, Ben Affleck (Photo by Sylvain Gaboury/FilmMagic)
Jennifer Garner (Photo by Steve Granitz/WireImage)
HOLLYWOOD, CA - FEBRUARY 29: Actress Jennifer Garner speaks on stage during the 76th Annual Academy Awards at the Kodak Theater on February 29, 2004 in Hollywood, California. (Photo by Kevin Winter/Getty Images)
Jennifer Garner during Jennifer Garner, Denzel Washington, Quentin Tarantino and The Roots Visit MTV's 'TRL' at MTV Studios in New York City, New York, United States. (Photo by Stephen Lovekin/FilmMagic)
Jennifer Garner (Photo by Dan MacMedan/WireImage)
Jennifer Garner during The 56th Annual Primetime Emmy Awards - Arrivals at The Shrine Auditorium in Los Angeles, California, United States. (Photo by Jeffrey Mayer/WireImage)
LAS VEGAS - JANUARY 8: Actress Jennifer Garner (L) and her mother attend the premiere of Twentieth Century Fox and Regency Enterprises' 'Elektra' at the Palms Casino on January 8, 2004 in Las Vegas, Nevada. (Photo by Getty Images for Twentieth Century Fox)
Jennifer Garner during 11th Annual Screen Actors Guild Awards - Press Room at The Shrine Auditorium in Los Angeles, California, United States. (Photo by Amy Graves/WireImage)
(EXCLUSIVE, Premium Rates Apply) Jennifer Garner and Ben Affleck *Exclusive Coverage* (Photo by Mathew Imaging/FilmMagic)
Jennifer Garner (Photo by SGranitz/WireImage)
Jennifer Garner at the Kodak Theatre in Hollywood, California (Photo by Steve Granitz/WireImage)
BEVERLY HILLS, CA - OCTOBER 12: BEVERLY HILLS, CA - OCTOBER 12: Producer J.J. Abrams poses with Jennifer Garner at the Children's Defense Fund 16th Annual Los Angeles 'Beat the Odds Awards' held on October 12, 2006 at the Beverly Hills Hotel, Beverly Hills, California. (Photo by Frazer Harrison/Getty Images)
Jennifer Garner during Hollywood Film Festival - 10th Annual Hollywood Awards - Arrivals at Beverly Hilton Hotel in Beverly Hills, California, United States. (Photo by Jon Kopaloff/FilmMagic)
Ben Affleck, nominee Best Performance by an Actor in a Supporting Role in a Motion Picture for 'Hollywoodland' and Jennifer Garner (Photo by George Pimentel/WireImage)
Jennifer Garner and Timothy Olyphant during 'Catch and Release' Los Angeles Premiere - Red Carpet at The Egyptian Theatre in Hollywood, California, United States. (Photo by Jeff Kravitz/FilmMagic, Inc for Variety Magazine)
THE TONIGHT SHOW WITH JAY LENO -- Episode 3293 -- Pictured: Actress Jennifer Garner during an interview on January 22, 2007 (Photo by Margaret Norton/NBC/NBCU Photo Bank via Getty Images)
Jennifer Garner during The World Premiere of Columbia Pictures' 'Catch and Release' at Egyptian Theater in Hollywood, CA, United States. (Photo by E. Charbonneau/WireImage for Sony Pictures-Los Angeles)
Jennifer Garner during Jennifer Garner Hosts Oscar De La Renta Boutique Opening Benefiting EIF Women's Research Fund at Oscar De La Renta Boutique in West Hollywood, California, United States. (Photo by Jon Kopaloff/FilmMagic)
WESTWOOD, CA - SEPTEMBER 17: Actress Jennifer Garner arrives at 'The Kingdom' premiere at the Mann's Village Theatre on September 17, 2007 in Westwood, California. (Photo by Gregg DeGuire/WireImage)
FRANCE - OCTOBER 03: Jennifer Garner, Jamie Foxx in Paris, France on October 3rd , 2007. (Photo by Pierre HOUNSFIELD/Gamma-Rapho via Getty Images)
Actress Jennifer Garner arrives at the Los Angeles Premiere 'The Kingdom' at the Mann Village Theater on September 17, 2007 in Westwood, California. (Photo by Jon Kopaloff/FilmMagic)
NEW YORK - OCTOBER 15: (ITALY OUT; NY DAILY NEWS, NEWSDAY OUT) Actress Jennifer Garner holds her daugther daughter Violet in Central Park October 15, 2007 in New York City. (Photo by Arnaldo Magnani/GettyImages)
US actress Jennifer Garner arrives for the Glamour Magazine 2007 Women of the Year awards in New York, 05 November 2007. The 35-year-old star has been named Glamour Woman of the Year, selected as the person who best presents an example of a woman with a 'successful career and happy family life while remaining stylish and elegant'. AFP PHOTO/Emmanuel DUNAND (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)
BEVERLY HILLS, CA - DECEMBER 3: Actress Jennifer Garner at the Four Seasons Hotel in Beverly Hills, California on December 3rd, 2007. (PHOTO BY MUNAWAR HOSAIN / FOTOS INTERNATIONAL / GETTY IMAGES) Reproduction by American tabloids is absolutely forbidden by our contracts with all agencies.
Actress Jennifer Garner arrives at the Los Angeles premiere 'Juno' at the Mann Village Theater on December 3, 2007 in Westwood, California. (Photo by Jon Kopaloff/FilmMagic)
HOLLYWOOD - APRIL 27: Jennifer Garner arrives at the Los Angeles premiere of 'Ghosts Of Girlfriends Past' at the Grauman's Chinese Theatre on April 27, 2009 in Hollywood, California. (Photo by Jason Merritt/Getty Images)
LOS ANGELES, CA - AUGUST 16: Jennifer Garner and Violet Affleck are seen on August 16, 2009, Los Angeles, California. (Photo by Headlinephoto/BuzzFoto/FilmMagic)
Actress Jennifer Garner arrives at the premiere of �The Invention of Lying� at the Grauman�s Chinese Theatre in Hollywood, California on September 21, 2009. AFP PHOTO / GABRIEL BOUYS (Photo credit should read GABRIEL BOUYS/AFP/Getty Images)
Actress Jennifer Garner attends the 67th Annual Golden Globes Awards at The Beverly Hilton Hotel on January 17, 2010 in Beverly Hills, California. (Photo by Steve Granitz/WireImage)
HOLLYWOOD - FEBRUARY 08: Actress Jennifer Garner arrives to the Los Angeles Premiere 'Valentine's Day' at Grauman's Chinese Theatre on February 8, 2010 in Hollywood, California. (Photo by Jon Kopaloff/FilmMagic)
WASHINGTON - NOVEMBER 18: Actress Jennifer Garner addresses the Senate Health, Education, Labor and Pensions committee at the Senate Dirksen Building on November 18, 2010 in Washington, DC. (Photo by Paul Morigi/WireImage)
LOS ANGELES, CA - JANUARY 14: Actors Jennifer Garner (L) and Jeremy Renner during the 16th annual Critics' Choice Movie Awards at the Hollywood Palladium on January 14, 2011 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for VH1)
WASHINGTON, DC - JUNE 08: Jennifer Garner discusses early childhood education and improved access to child care at the Capitol Visitor's Center on June 8, 2011 in Washington, DC. (Photo by Leigh Vogel/Getty Images)
HOLLYWOOD, CA - NOVEMBER 06: Actress Jennifer Garner arrives at 2011 AFI FEST - 'Butter' Special Screening at Grauman's Chinese Theatre on November 6, 2011 in Hollywood, California. (Photo by Gregg DeGuire/FilmMagic)
HOLLYWOOD, CA - AUGUST 06: Actress Jennifer Garner arrives at the premiere of Walt Disney Pictures' 'The Odd Life of Timothy Green' held at the El Capitan Theatre on August 6, 2012 in Hollywood, California. (Photo by Jason Merritt/Getty Images)
NEW YORK, NY - SEPTEMBER 27: Actress Jennifer Garner attends The Cinema Society with DKNY, Forevermark & RentTheRunway.com premiere of 'Butter' at AMC Lincoln Square Theater on September 27, 2012 in New York City. (Photo by Charles Eshelman/FilmMagic)
BEVERLY HILLS, CA - OCTOBER 05: Actress Jennifer Garner arrives at Variety's 4th Annual Power of Women Event Presented by Lifetimeat the Beverly Wilshire Four Seasons Hotel on October 5, 2012 in Beverly Hills, California. (Photo by Jason Merritt/WireImage)
BEVERLY HILLS, CA - JANUARY 13: 70th ANNUAL GOLDEN GLOBE AWARDS -- Pictured: Actress Jennifer Garner arrives to the 70th Annual Golden Globe Awards held at the Beverly Hilton Hotel on January 13, 2013. (Photo by Christopher Polk/NBC/NBC via Getty Images)
LOS ANGELES, CA - JANUARY 27: Actress Jennifer Garner arrives at the 19th Annual Screen Actors Guild Awards held at The Shrine Auditorium on January 27, 2013 in Los Angeles, California. (Photo by Jennifer Graylock/FilmMagic)
HOLLYWOOD, CA - FEBRUARY 02: Actress Jennifer Garner attends the 65th annual Directors Guild Of America Awards at The Ray Dolby Ballroom at Hollywood & Highland Center on February 2, 2013 in Hollywood, California. (Photo by Jason LaVeris/FilmMagic)
HOLLYWOOD, CA - FEBRUARY 24: Actress Jennifer Garner (L) and actor/director Ben Affleck arrive at the Oscars held at Hollywood & Highland Center on February 24, 2013 in Hollywood, California. (Photo by Kevin Mazur/WireImage)
BEVERLY HILLS, CA - OCTOBER 17: Jennifer Garner, Matthew McConaughey and Jared Leto attend the 'Dallas Buyers Club' Los Angeles premiere held at the Academy of Motion Picture Arts and Sciences on October 17, 2013 in Beverly Hills, California. (Photo by JB Lacroix/WireImage)
Actresses Jennifer Garner and Jessica Chastain present an award onstage at the 85th Annual Academy Awards on February 24, 2013 in Hollywood, California. AFP PHOTO/Robyn BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
NEW YORK, NY - MARCH 13: Actress Jennifer Garner attends the Neutrogena Sun Summit on the changing environment's impact to overall skin health on March 13, 2013 in New York City. (Photo by Larry Busacca/Getty Images for Neutrogena)
TORONTO, ON - SEPTEMBER 07: Jennifer Garner arrives at the 'Dallas Buyers Club' premiere during the 2013 Toronto International Film Festival held at Princess of Wales Theatre on September 7, 2013 in Toronto, Canada. (Photo by Michael Tran/FilmMagic)
LOS ANGELES, CA - NOVEMBER 30: Jennifer Garner and Violet Affleck are seen on November 30, 2013 in Los Angeles, California. (Photo by Bauer-Griffin/GC Images)
LOS ANGELES, CA - JANUARY 18: Actress Jennifer Garner arrives at the 20th Annual Screen Actors Guild Awards at The Shrine Auditorium on January 18, 2014 in Los Angeles, California. (Photo by Jon Kopaloff/FilmMagic)
WEST HOLLYWOOD, CA - MARCH 02: Ben Affleck and Jennifer Garner attend the 2014 Vanity Fair Oscar Party hosted by Graydon Carter on March 2, 2014 in West Hollywood, California. (Photo by Jon Kopaloff/FilmMagic)
WESTWOOD, CA - APRIL 07: Actress Jennifer Garner arrives at the Los Angeles premiere of 'Draft Day' at Regency Village Theatre on April 7, 2014 in Westwood, California. (Photo by Gregg DeGuire/WireImage)
GOOD MORNING AMERICA - Jennifer Garner is a guest on 'Good Morning America,' 4/9/14, airing on the ABC Television Network. (Photo by Fred Lee/ABC via Getty Images)
LOS ANGELES, CA - JULY 04: Jennifer Garner is seen on July 04, 2014 in Los Angeles, California. (Photo by Pixplus/Bauer-Griffin/GC Images)
BEVERLY HILLS, CA - JUNE 24: Actress Jennifer Garner arrives at the 5th Annual Thirst Gala at The Beverly Hilton Hotel on June 24, 2014 in Beverly Hills, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
NEW YORK, NY - OCTOBER 02: Actress Jennifer Garner tapes an interview at 'Good Morning America' at the ABC Times Square Studios on October 2, 2014 in New York City. (Photo by Ray Tamarra/GC Images)
BEVERLY HILLS, CA - OCTOBER 21: Actress Jennifer Garner attends the 28th American Cinematheque Award honoring Matthew McConaughey at The Beverly Hilton Hotel on October 21, 2014 in Beverly Hills, California. (Photo by Steve Granitz/WireImage)
SANTA BARBARA, CA - FEBRUARY 06: Actors Jennifer Garner and Steve Carell attend the 2015 Outstanding Performer of the Year Award at the 30th Santa Barbara International Film Festival at the Arlington Theatre on February 6, 2015 in Santa Barbara, California. (Photo by Rebecca Sapp/Getty Images for The Santa Barbara International Film Festival)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0226 -- Pictured: (l-r) Actress Jennifer Garner during an interview with host Jimmy Fallon on March 17, 2015 -- (Photo by: Douglas Gorenstein/NBC/NBCU Photo Bank via Getty Images)
WASHINGTON, DC - MARCH 26: Actress Jennifer Garner (R) and her daughter Violet Affleck listen to Ben Affleck testify before a Senate Appropriations State, Foreign Operations, and Related Programs Subcommittee hearing on 'Diplomacy, Development, and National Security' on Capitol Hill in Washington March 26, 2015. (Photo by Paul Morigi/WireImage)
NEW YORK, NY - NOVEMBER 17: Jennifer Garner speaks onstage at the 3rd Annual Save the Children Illumination Gala on November 17, 2015 in New York City. (Photo by Bryan Bedder/Getty Images for Save the Children)
Actress Jennifer Garner arrives on the red carpet for the 88th Oscars on February 28, 2016 in Hollywood, California. AFP PHOTO / FREDERIC J. BROWN / AFP / FREDERIC J.BROWN (Photo credit should read FREDERIC J.BROWN/AFP/Getty Images)
WEST HOLLYWOOD, CA - MARCH 04: Actress Jennifer Garner attends Sony Pictures releasing's 'Miracles From Heaven' photo call on March 4, 2016 in West Hollywood, California. (Photo by JB Lacroix/WireImage)
HOLLYWOOD, CA - MARCH 09: Jennifer Garner arrives at the premiere of Columbia Pictures' 'Miracles From Heaven' held at ArcLight Hollywood on March 9, 2016 in Hollywood, California. (Photo by Michael Tran/FilmMagic)
MIAMI, FL - MARCH 15: Jennifer Garner and Eugenio Derbez are seen on the set of 'Un Nuevo Dia' to promote the film 'Miracles From Heaven' at Telemundo Studios on March 15, 2016 in Miami, Florida. (Photo by Alexander Tamargo/WireImage)
LATE NIGHT WITH SETH MEYERS -- Episode 342 -- Pictured: Actress Jennifer Garner during an interview on March 17, 2016 -- (Photo by: Lloyd Bishop/NBC/NBCU Photo Bank via Getty Images)
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WATCH: Jennifer Garner on Teaching Her Kids to Be 'Citizens of the World'

"It's so important that you model for your kids how to be a citizen of the world, and I think that's the very best thing you can do," she explained. "That's really important at home, to make sure that our kids know that we both have causes that we care so much about... that we dedicate time, resources, and our energy toward making our own little slice of the world a little bit better."

Hear more in the video below.


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