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Lady Gaga, Taylor Kinney

Kristin Murphy/Getty Images for Operation Smile

Cutest engaged couple ever? Well, one of them, for sure!

Lady Gaga and fiancé Taylor Kinney showcased some sweet PDA at the Operation Smiles' 4th annual Celebrity Ski & Smile Challenge VIP Dinner in Park City Utah on Saturday.

The 28-year-old pop star, who likes to change up her look, donned a black and blond ombre wig and kept warm in a pink fur coat, worn over what appeared to be a black tank top and leggings, channeling old Hollywood glamour. She also sported her giant heart-shaped diamond engagement ring, of course.

The 33-year-old Chicago Fire actor, who kept it casual in a denim shirt worn over a white tee and tan pants, was seen arriving with his lady and kissing her on the cheek as she beamed and held a couple of teddy bears.

PHOTOS: Lady Gaga & shirtless Taylor Kinney jump into icy lake for Polar Plunge charity event!

The two got engaged on Valentine's Day (hence, the heart-shaped ring, estimated to be carats and worth up to $400,000). The couple, who started dating after meeting on the set of Lady Gaga's 2011 music video "Yoü And I, have not revealed a wedding date.

Operation Smile provides free surgeries for children with cleft lips, cleft palates and other facial deformities. Other celebs seen at the charity event included Brooke Burke-Charvet and Heart rocker Nancy Wilson.