All access inside the Oscars Governors Ball and after-parties

The first stop for winners and VIPs after the 2018 Oscars was the official Academy Awards after party – the Governors Ball and then most ended their night at Madonna and Guy Oseary's exclusive bash. Scroll through to see all the stars who celebrated at the ball and after parties. Madonna and Guy Oseary's Oscars party is the late night spot every year. This year the songstress enlisted Cardi B to entertain the crowd. The New York rapper performed several of her songs on the dance floor while the hostess with the mostess watched as well as Kim Kardashian and more. A source tells HELLO! that the star-studded party continued on well past 2 a.m. Madonna took to Instagram to thank the Bodak Yellow rapper for performing. "Love this girl so much!! ♥️♥️♥️ Thank you @iamcardib for shining your light at the party last night!  #oscars 2018 thank you @.offsetyrn @quavohuncho @moschino  @jr #party #fun #aboutlaatnight" Photo: Instagram/@madonna

The Vanity Fair Oscars party never disappoints with the whose who of talent making it one of their stops during the very long night. In true party girl fashion, Jenna Dewan Tatum posed for a mirror selfie with her best friend Emmanuelle Chriqui during the Vanity Fair Oscars party. Photo: Instagram/@jennadewan

Gabrielle Union, Regina Hall and Olivia Munn brought endless girl power to the Vanity Fair bash sponsored by Belvedere vodka. Photo: Instagram/@oliviamunn

Gabrielle Union, Regina Hall and Olivia Munn brought endless girl power to the Vanity Fair bash. Photo: Instagram/@mindykaling

Over at the Elton John Foundation's annual Oscars screening, Ricky Martin and his squad, which included husband Jwan Yosef, Matthew Morrison and Renee Puente, showed off their style. Photo: Getty Images

Miley Cyrus and her leading man Liam Hemsworth cozied up with Elton John during his 26th annual AIDS Foundation Academy Awards viewing party with cocktails by Clase Azul Tequila. Photo: Getty Images

A toast for the host! Jimmy Kimmel kept the party going at his own star-studded Oscars party where they celebrated the night with a Ciroc Jimlet at The Lot. Photo: Getty Images

Rita Ora took to the stage during Jimmy Kimmel's post-show after-party for Hollywood's biggest night at The Lot in L.A. Photo: Getty Images

Katy Perry made the crowd roar during her performance at the Byron Allen and Entertainment Studios Oscar Gala sponsored by Heineken. Jamie Foxx also took over the microphone at the end of the the viewing party that was thrown in support of Children's Hospital Los Angeles. He asked all the women to join him on the dance floor as the deejay played Beyonce's Run the World. Photo: Getty Images

Time's Up activists and screen queens Mira Sorvino, left, and Ashley Judd held court as celebrities partied the night away starting at the Governors Ball. Photo: Kevork Djansezian/Getty Images

Oscar winner and NBA star Kobe Bryant celebrated his best animated short win with a kiss for wife Vanessa Bryant. Photo: Kevork Djansezian/Getty Images

Best Supporting Actress and lady in red Allison Janney of I, Tonya held on tight to her newly-minted statuette at the party. Photo: ANGELA WEISS/AFP/Getty Images

Meryl Streep and old friend Steven Spielberg shared a laugh at the Governors Ball. Photo: ANGELA WEISS/AFP/Getty Images

Timothee Chalamet brought sister Pauline as his date to both the ceremony and the 90th Annual Academy Awards Governors Ball. Photo: Kevork Djansezian/Getty Images

Dame Helen Mirren wore some very regal sapphires as she mingled at the 90th Annual Academy Awards Governors Ball. Photo: ANGELA WEISS/AFP/Getty Images

Sam Rockwell clutched his brand new Oscar as he joined longtime love Leslie Bibb and actor Woody Harrelson. Photo: ANGELA WEISS/AFP/Getty Images

Gary Oldman, who took home Best Actor for Darkest Hour, headed to the engraving station to cement his Oscar winner status. Photo: Kevork Djansezian/Getty Images

Best Director and Best Film winner Guillermo del Toro of The Shape of Water was in high spirits as he had his golden statuettes engraved. Photo: ANGELA WEISS/AFP/Getty Images

Get Out writer-director Jordan Peele proudly showed off his new Oscar, which he won for Best Original Screenplay. Photo: Kevork Djansezian/Getty Images

Prior to attending Elton John's Oscars viewing party, Annalynne McCord stopped by the Nordstrom Local Los Angeles for their screening. Photo: Sara Jaye​ Weiss, Startraksphoto.com