The trio acted alongside each other in A Star is Born, which was widely snubbed at Sunday night’s ceremony, picking up only one of a potential five awards.
But Cooper and Gaga appeared unfazed as they shared a hug with Elliott and cheered on the actor outside the TCL Chinese Theatre for his Hand And Footprint Ceremony.
Gaga shared several snaps from the event on Instagram, including one showing Elliott planting a kiss on her forehead.
“So excited to be here for Sam Elliott’s hand & footprint ceremony,” she captioned he snap.
In another showing the actor placing his hand in the cement, she wrote: “We love you Sam!!!”
Cooper gave a speech at the ceremony which also saw Ashton Kutcher step out to show his support.
It came hours after A Star is Born missed out on the Best Film gong at the Golden Globes to Queen biopic Bohemian Rhapsody. Cooper and Gaga were also snubbed in the Best Actor and Actress categories as well as Director for Cooper.
Lady Gaga accepts award best original song award for 'Shallow'
But Gaga did pick up the Best Original Song award for her track Shallow – something she celebrated in bed with a bowl of cereal.
Gaga’s fiancé Christian Carino shared a black and white snap of their low-key celebrations alongside the caption: “What a rager.”
Cooper was joined at the 76th annual bash by his girlfriend Irina Shayk. The couple looked far from “miserable” as they arrived hand-in-hand, while Shayk was later spotted affectionately fixing Cooper’s bowtie.
Their rare appearance comes weeks after they were reported to be on the rocks.