Taylor Swift is known for wearing her heart on her sleeve, but on Wednesday it was around her neck.

The 26-year-old pop star was snapped at The Church Key in Los Angeles, wearing the gold locket her boyfriend, Calvin Harris, gave her over the weekend.

WATCH: Taylor Swift and Calvin Harris Celebrate Their One-Year Anniversary

The trinket was an anniversary gift from the 32-year-old Scottish DJ, which commemorated their first year together as a couple. The locket features an engraving of the date "3-6-2015," which is the date they officially became an item.

Swift shared a close-up Instagram photo of the locket on Sunday after Harris posted a Snapchat, sharing how they spent their special day.

In the nine-second video clip, which shows a chocolate cake frosted with the words "1 year" and two red hearts, the DJ/music producer excitedly says, "One year, we got one-year cake!" as the "New Romantics" singer smiles and nods.

PHOTOS: Calvin Harris Congratulates 'Beautiful Girlfriend' Taylor Swift on Her GRAMMY Wins

The two have shared a number of precious moments since becoming a couple, including their poolside hangout on a swan float, riding a boat in London and rocking hilarious costumes inside a photobooth.

Watch the video below to see them flirting at the 2015 Billboard Music Awards.