Where’s Leo? DiCaprio Goes Incognito in a Werewolf Mask for Halloween

Leo, is that you?

The Wolf of Wall Street star took his 2013 role literally for Kate Hudson’s Halloween bash in Los Angeles on Friday night. DiCaprio was almost unrecognizable in a ferocious wolf mask, and completed his look with a casual button down and jeans.

The star, 41, attended the annual party with longtime pal Tobey Maguire, and the dynamic duo was also spotted dancing with Robin Thicke at the Casamigos Halloween party that same night.

“They were drinking Casamigos cocktails, having a blast and super upbeat,” says a fellow partygoer about Maguire and DiCaprio. “At the end of the night, Leo was dancing like crazy with Robin Thicke. They were cracking up the other guests.”

DiCaprio and Maguire’s guys’ night out comes just two weeks after Maguire announced exclusively to PEOPLE that he and Jennifer Meyer were ending their marriage.

Maguire, 41, made a low-key arrival at the Casamigos bash around 10 p.m., and stayed incognito in a blue monkey mask before meeting up with his Oscar-winning pal, who arrived just before midnight with an entourage.

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One person missing from DiCaprio’s crew? His girlfriend, 24-year-old Danish model Nina Agdal. A source told PEOPLE earlier this week that the DiCaprio and Agdal, who have been dating since July, “seem more serious.”

“Leo seems very into her,” the source told PEOPLE. “He constantly holds her hand and kisses her. Nina seems to enjoy Leo’s company too. She acts very giddy around him. She has great energy and seems to make Leo very happy.”