The INSIDER Summary:
- The cast of "Riverdale" were guests on Tuesday night's episode of NBC's "The Tonight Show Starring Jimmy Fallon.
- During the interview, host Fallon was geeking out over having the cast on.
- He was giddy when they let him wear Jughead's crown beanie.
- He spazzed out over having seen the first episode of the second season.
- He got the cast to chug a milkshake with him.
- "Riverdale" returns Wednesday, October 11 at 8 p.m. on The CW.
- Watch Fallon fan boy over the stars of "Riverdale" below.
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