America isn't the only one celebrating a birthday this weekend. Suicide Squad star Margot Robbie turned 25 this past Thursday, July 2. To celebrate, her cast mates surprised her with a Harley Quinn inspired cake on set. To mark this occasion, a photo has ben shared on the official WBPictures Instagram account.

This is just the latest weird gift to arrive on set. Early on in the production process, Jared Leto, who has gone full-blown method as The Joker, never going out of character, sent Margot Robbie a live rat, which was then passed around set as the official mascot of the Suicide Squad cast. After living with various members of Task Force X, the black rat, named Venustiano, presumably after Mexican Revolution leader José Venustiano Carranza Garza, finally found a home with director Guillermo del Toro. Jared Leto also sent co-star Will Smith, playing Deadshot, a couple of bullets and a dead hog. It is not known what became of the hog.

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Suicide Squad also stars Joel Kinnaman as Rick Flagg, Jai Courtney as Captain Boomerang, Cara Delevingne as Enchantress, Karen Fukuhara as Katana, Adewale Akinnuoye-Agbaje as Killer Croc, Jay Hernandez as El DIablo, Adam Beach as Slipknot, Viola Davis as Amanda Waller and Jared Leto as the Joker. There's also mystery roles for Ike Barinholtz, Scott Eastwood, Raymond Olubowale, Alex Meraz, Jim Parrack, and Common. Created by Robert Kanigher and Ross Andru back in 1959, Suicide Squad is written and directed by David Ayer. The film will continue shooting throughout September and hits theaters next summer. Take a look at Margot Robbie's cool cake.

"wbpicturesRegram from @margotrobbie: Harley's cake - thank you squad! #SuicideSquad"