Instead of having an awkward encounter, the two seemed to be in good spirits, reported Ace Showbiz.
Curus rocked a pink furry jacket atop a wolf-printed T-shirt and floral black-and-white pants. She sported minimal makeup with nude lipstick and messy bang.
Meanwhile, the "Terminator Genisys" star opted for a dapper look wearing a navy blue suit.
The pair looked happy as they posed for some selfies.
The "We Can't Stop" hitmaker also appeared in Arnold's Snapchat video.
In the clip, the two giggled and Schwarzenegger could not help gushing about Cyrus.