People.com Entertainment TV Pizza Parties, Coachella & More! Proof the 'Riverdale' Stars Are Besties IRL There's lots of drama and tensions in Riverdale — but once the cameras stop rolling, there's nothing but love among the cast members, including stars KJ Apa, Cami Mendes, Lili Reinhart and Cole Sprouse By Diana Pearl Published on October 11, 2017 03:45 PM Share Tweet Pin Email 01 of 11 Camila Mendes/Instagram It was pizza (and abs) on the menu for Camila Mendes, Charles Melton and KJ Apa in a goof-off moment. 02 of 11 Camila Mendes/Instagram Betty and Veronica's real-life counterparts — Lili Reinhart and Mendes — are just as tight IRL as they are on the show. 03 of 11 Camila Mendes/Instagram Mendes snapped a photo of costars Cole Sprouse and Mark Consuelos — who plays her onscreen dad — taking in a sunset. 04 of 11 Lili Reinhart/Instagram It's nothing but laughs for Reinhart and Casey Cott, who plays her onscreen BFF, Kevin. 05 of 11 Casey Cott/Instagram The cast that travels together, stays together. Reinhart, Sprouse, Cott, Mendes and Echo Kellum hopped a flight to Vancouver together to get back to filming. 06 of 11 KJ Apa/Instagram Mendes is Apa's "brother from another mother," according to his caption of this shot of the pair with costar Sprouse. 07 of 11 KJ Apa/Instagram A day in the mountains with Sprouse and Apa was captured on the latter's Instagram. 08 of 11 Casey Cott/Instagram A sweet selfie with Cott's "fans" — and costars — Reinhart and Madelaine Petsch. 09 of 11 Casey Cott/Instagram Riverdale does Coachella! Mendes, Reinhart, Cott and Ross Butler hit up the music festival in April. 10 of 11 Lili Reinhart/Instagram Mendes and Reinhart twin in matching heels, poses and chairs ahead of their joint appearance on Late Night With Seth Meyers. 11 of 11 Tiera Skovbye/Instagram On-set shenanigans with Mendes, Apa, Tiera Skovbye and Skovbye's faux baby bump.