Kanye West and Kim Kardashian in April 2012
Jackson Lee/Splash News Online
01/02/2013 AT 12:00 PM EST
Has Kim Kardashian
suddenly developed more of a sweet tooth?
The expectant mother
and boyfriend Kanye West
, who were with another couple, grabbed fro-yo to go at Pinkberry at L.A.'s Farmers Market at the Grove on New Year's Day, just hours after their whirlwind trip to Las Vegas
to ring in 2013.
The yogurt stop came after the couple (and their friends) went to see Django Unchained
. Of West and Kardashian, an observer told PEOPLE: "They were holding hands and looked so happy together. They were laughing with their friends. ... Kanye looked especially happy. I've never seen him smile so much."
At Pinkberry, West, 35, kept a protective arm around Kardashian, 32, as they placed their orders – chocolate hazelnut yogurt in a cone for her, plain yogurt with strawberry and caramel toppings for him.
West, in a grey wool overcoat, with his signature jeans and hi-top sneakers, and Kardashian, who wore a blousy white shirt over casual black pants with black Christian Louboutin high heels, cuddled at the counter while fans swarmed around the shop snapping photos on their mobile phones.
"They were really low-key and seemed mellow and happy," says an onlooker. "Kanye had a big smile on his face and Kim looked a little tired, but beautiful. She was glowing ... fresh-faced and wearing very little makeup."
Added the eyewitness: "She shared some sweet glances with Kanye as she tucked into her yogurt cone before they left the shop with their friends and climbed into a waiting chauffeured Escalade out back."
– Marisa Laudadio and Raha Lewis