Steven Tyler, 71, is joined by girlfriend Aimee Preston, 32, for 'Ad Astra' premiere

There's a forty-year age difference between them, but Steven Tyler and his girlfriend are going strong.

The Aerosmith frontman, 71, had Aimee Preston, 32, by his side Wednesday at the premiere of "Ad Astra," the two opting to share a few kisses for the cameras. His daughter Liv Tyler, 42, stars in the drama-fantasy film.

The May-December couple became close several years ago when Preston began working as Tyler's personal assistant. They went public with their relationship three years ago, in 2016, but reports of a relationship first surfaced as early as 2014.

17 PHOTOS
Steven Tyler and Aimee Preston together
See Gallery
Steven Tyler and Aimee Preston together
LOS ANGELES, CALIFORNIA - SEPTEMBER 18: Steven Tyler and Aimee Preston attend the Premiere of 20th Century Fox's "Ad Astra" at The Cinerama Dome on September 18, 2019 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CALIFORNIA - SEPTEMBER 18: Steven Tyler and Aimee Preston attend the Premiere of 20th Century Fox's "Ad Astra" at The Cinerama Dome on September 18, 2019 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CALIFORNIA - SEPTEMBER 18: (L-R) Steven Tyler and Aimee Preston attend the premiere of 20th Century Fox's "Ad Astra" at The Cinerama Dome on September 18, 2019 in Los Angeles, California. (Photo by Matt Winkelmeyer/Getty Images)
LOS ANGELES, CALIFORNIA - SEPTEMBER 18: Steven Tyler and Aimee Preston attend the Premiere of 20th Century Fox's "Ad Astra" at The Cinerama Dome on September 18, 2019 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CALIFORNIA - MARCH 14: Aimee Preston and Steven Tyler arrive at the 2019 iHeartRadio Music Awards which broadcasted live on FOX at Microsoft Theater on March 14, 2019 in Los Angeles, California. (Photo by Tony Barson/WireImage)
LOS ANGELES, CA - JANUARY 28: Aimee Preston (L) and Steven Tyler at Steven Tyler and Live Nation presents Inaugural Janie's Fund Gala & GRAMMY Viewing Party at Red Studios on January 28, 2018 in Los Angeles, California. (Photo by Rich Fury/Getty Images for Janie's Fund)
LOS ANGELES, CA - JANUARY 28: Aimee Preston (L) and Steven Tyler at Steven Tyler and Live Nation presents Inaugural Janie's Fund Gala & GRAMMY Viewing Party at Red Studios on January 28, 2018 in Los Angeles, California. (Photo by Tommaso Boddi/Getty Images for Janie's Fund)
VANCOUVER, BC - OCTOBER 21: (L-R) Aimee Preston and Steven Tyler attend the David Foster Foundation Gala at Rogers Arena on October 21, 2017 in Vancouver, Canada. (Photo by Andrew Chin/Getty Images)
ST PAUL, MN - JULY 16: Aimee Preston and Steven Tyler pose on the red carpet at the 2017 Starkey Hearing Foundation So the World May Hear Awards Gala at the Saint Paul RiverCentre on July 16, 2017 in St. Paul, Minnesota. (Photo by Adam Bettcher/Getty Images for Starkey Hearing Foundation)
ROME, ITALY - SEPTEMBER 10: Aimee Preston and Steven Tyler attends Celebrity Fight Night on September 10, 2017 in Rome, Italy. (Photo by Venturelli/WireImage)
ROME, ITALY - SEPTEMBER 10: Aimee Preston and Steven Tyler attends Celebrity Fight Night on September 10, 2017 in Rome, Italy. (Photo by Venturelli/WireImage)
ROME, ITALY - SEPTEMBER 10: Aimee Preston and Steven Tyler attends Celebrity Fight Night on September 10, 2017 in Rome, Italy. (Photo by Venturelli/WireImage)
ST PAUL, MN - JULY 16: Aimee Preston and Steven Tyler pose on the red carpet at the 2017 Starkey Hearing Foundation So the World May Hear Awards Gala at the Saint Paul RiverCentre on July 16, 2017 in St. Paul, Minnesota. (Photo by Adam Bettcher/Getty Images for Starkey Hearing Foundation)
LONDON, ENGLAND - JUNE 10: Steven Tyler (L) and Aimee Ann Preston attend a celebration of the Stella McCartney AW17 collection and film launch at Ye Olde Mitre on June 10, 2017 in London, England. (Photo by David M Benett/Dave Benett/Getty Images for Stella McCartney)
NEW YORK, NY - DECEMBER 03: Steven Tyler (L) and Aimee Ann Preston attend The Hospitality Committee For United Nations Delegations, Inc. Ambassadors' Ball 2016 at Metropolitan Club on December 3, 2016 in New York City. (Photo by Rob Kim/Getty Images)
NEW YORK, NY - DECEMBER 03: Steven Tyler (L) and Aimee Ann Preston attend The Hospitality Committee For United Nations Delegations, Inc. Ambassadors' Ball 2016 at Metropolitan Club on December 3, 2016 in New York City. (Photo by Rob Kim/Getty Images)
NEW YORK, NY - DECEMBER 03: Steven Tyler (L) and Aimee Ann Preston attend The Hospitality Committee For United Nations Delegations, Inc. Ambassadors' Ball 2016 at Metropolitan Club on December 3, 2016 in New York City. (Photo by Rob Kim/Getty Images)
HIDE CAPTION
SHOW CAPTION
of
SEE ALL
BACK TO SLIDE

The rocker's daughter Chelsea was also in attendance, and she was all smiles as she posed for photos with her husband, her father and his girlfriend. The 30-year-old also showed off a baby bump, revealing she's due in February.

Although Tyler's girlfriend may be young, she has quite a resumé: Upon first graduating from college, she worked for the Trump family as a personal assistant within the Trump Organization. She also used to work as Victoria Beckham's assistant, but she was reportedly let go.

Also looking sharp at the "Ad Astra" premiere was Brad Pitt, who co-stars alongside Liv Tyler. The movie is out in theaters Sept. 20.

17 PHOTOS
Steven Tyler out and about in recent years
See Gallery
Steven Tyler out and about in recent years
ROME, ITALY - SEPTEMBER 10: Steven Tyler attends Celebrity Fight Night on September 10, 2017 in Rome, Italy. (Photo by Venturelli/WireImage)
ROME, ITALY - SEPTEMBER 08: Steven Tyler performs at the Andrea Bocelli show as part of the 2017 Celebrity Fight Night in Italy Benefiting The Andrea Bocelli Foundation and the Muhammad Ali Parkinson Center on September 8, 2017 in Rome, Italy. (Photo by Jonathan Leibson/Getty Images for Celebrity Fight Night)
ST PAUL, MN - JULY 16: Aimee Preston and Steven Tyler pose on the red carpet at the 2017 Starkey Hearing Foundation So the World May Hear Awards Gala at the Saint Paul RiverCentre on July 16, 2017 in St. Paul, Minnesota. (Photo by Adam Bettcher/Getty Images for Starkey Hearing Foundation)
ST PAUL, MN - JULY 16: Steven Tyler performs at the 2017 Starkey Hearing Foundation So the World May Hear Awards Gala at the Saint Paul RiverCentre on July 16, 2017 in St. Paul, Minnesota. (Photo by Adam Bettcher/Getty Images for Starkey Hearing Foundation)
CASTLE DONINGTON, ENGLAND - JUNE 11: Steven Tyler of Aerosmith peforms during the last ever Aerosmith show in the UK headlining day 3 of Download Festival at Donington Park on June 11, 2017 near Castle Donington, England. (Photo by Ollie Millington/WireImage)
TOPSHOT - Steven Tyler of Aerosmith performs at the Royal Arena in Copenhagen, on June 5, 2017. / AFP PHOTO / Scanpix / Nils Meilvang / Denmark OUT (Photo credit should read NILS MEILVANG/AFP/Getty Images)
LONDON, ENGLAND - JUNE 10: Steven Tyler attends a celebration of the Stella McCartney AW17 collection and film launch at Ye Olde Mitre on June 10, 2017 in London, England. (Photo by David M Benett/Dave Benett/Getty Images for Stella McCartney)
BERLIN, GERMANY - MAY 28: Steven Tyler and Joe Perry (Aerosmith) during 'Mensch Gottschalk - Das bewegt Deutschland' TV Live Show from Berlin at Studio Berlin Adlershof on May 28, 2017 in Berlin, Germany. (Photo by Franziska Krug/Getty Images)
MOSCOW, RUSSIA - MAY 23: American rock band Aerosmith's lead singer Steven Tyler performs during a concert at the Olimpiysky Sports Complex on May 23, 2017 in Moscow, Russia. (Photo by Alexander Miridonov/Kommersant via Getty Images)
LOS ANGELES, CA - MAY 12: Steven Tyler is seen on May 12, 2017 in Los Angeles, CA. (Photo by Hollywood To You/Star Max/GC Images)
LOS ANGELES, CA - FEBRUARY 14: Steven Tyler is seen at LAX on February 14, 2017 in Los Angeles, California. (Photo by starzfly/Bauer-Griffin/GC Images)
NEW YORK, NY - DECEMBER 03: Steven Tyler (L) and Aimee Ann Preston attend The Hospitality Committee For United Nations Delegations, Inc. Ambassadors' Ball 2016 at Metropolitan Club on December 3, 2016 in New York City. (Photo by Rob Kim/Getty Images)
MEXICO CITY, MEXICO - OCTOBER 27: Singer Steven Tyler of Aerosmith performs onstage at Arena Ciudad de Mexico on October 27, 2016 in Mexico City, Mexico. (Photo by Victor Chavez/WireImage)
SAO PAULO, BRAZIL - OCTOBER 15: Steven Tyler member of the band Aerosmith performs live on stage at Allianz Parque on October 15, 2016 in Sao Paulo, Brazil. (Photo by Mauricio Santana/Getty Images)
DEL MAR, CA - SEPTEMBER 17: Aerosmith (L) Steven Tyler and Joe Perry performs at the 2016 KAABOO Del Mar at the Del Mar Fairgrounds on September 17, 2016 in Del Mar, California. (Photo by Christopher Victorio/WireImage for Kaaboo Del Mar via imageSPACE)
DEL MAR, CA - SEPTEMBER 17: Aerosmith (L-R) Joe Perry and Steven Tyler performs at the 2016 KAABOO Del Mar at the Del Mar Fairgrounds on September 17, 2016 in Del Mar, California. (Photo by Christopher Victorio/WireImage for Kaaboo Del Mar via imageSPACE)
LOS ANGELES, CA - SEPTEMBER 14: Steven Tyler is seen at LAX on September 14, 2016 in Los Angeles, California. (Photo by starzfly/Bauer-Griffin/GC Images)
HIDE CAPTION
SHOW CAPTION
of
SEE ALL
BACK TO SLIDE

Read Full Story

Sign up for Entertainment Insider by AOL to get the hottest pop culture news delivered straight to your inbox!

Subscribe to our other newsletters

Emails may offer personalized content or ads. Learn more. You may unsubscribe any time.