Bella Hadid and The Weeknd were very affectionate as they celebrated his birthday at an army fatigue-themed bash on Friday, an onlooker tells PEOPLE
Keeping in theme with the festivities, the lovebirds both wore coordinating camouflage print outfits to the party, which was held at Tao Downtown in New York City and sponsored by Remy Martin.
In a series of images of the pair posted by the in-demand model, Hadid showed off her svelte physique in a green micro-mini skirt from LF The Brand, cropped camo top and matching oversize jacket. Completing her outfit, Hadid, 22, accessorized with a pair of sheer Prada knee-high socks, heeled boots and hoop earrings.
Standing by her side in all of the images is the “Can’t Feel My Face” singer, who was wearing an oversized camo jacket with matching pants, a dark shirt, black shoes and plenty of bling.
“1 minute til my favorite day of the year…. @theweeknd,” the model wrote beside one photo of the pair, which was shared late on Friday night, shortly before her boyfriend’s special day began.
“Happy birthday daddy,” she cheekily captioned another shot of the pair.
The couple arrived at the bash around 1 a.m. and were affectionate and posed for many photos together, an onlooker tells PEOPLE, adding that throughout the night, The Weeknd (whose real name is Abel Tesfaye) could be seen holding the model around her waist and kissing her.
Most everybody in attendance — which included Kourtney Kardashian’s former fling Luka Sabbat — dressed according to the theme, and even the musician’s three-tier cake looked ready to go off into battle, says the onlooker.
The Weeknd also showed off a new iced-out chain, which was covered in crosses and had a special message engraved on the back: “Who God Has Blessed, No Man Can Curse.” Hadid could also be seen rocking jewelry, including a thick braided diamond choker and a star-shaped ring, which she wore on her middle finger, the onlooker says.
The “Starboy” singer went on to share a sweet snap of Hadid’s bling at the bash, as he sweetly held her hand to better show of the ring.
RELATED VIDEO: The Weeknd Shares Series of Intimate Photos with Birthday ‘Angel’ Bella Hadid as She Turns 22
Each entry in The Weeknd’s slideshow was steamier than the last — from a video of the pair kissing at a bar, to cuddly shots in an art exhibit, to a shot of the singer standing over Hadid as she reclined in a bathtub filled with rose petals.
“Happy birthday Angel,” he captioned the shots, adding black and red emojis.