• Cole and Dylan Sprouse celebrated their 27th birthdays on Sunday, August 4.
  • The twin actors were born 15 minutes apart, Dylan being the older of the two.
  • Birthday wishes poured in from Cole’s “Riverdale” costars, including his on-screen/off-screen muse Lili Reinhart and best friend KJ Apa.
  • The best post came from Hart Denton, who plays Chic Cooper in the teen drama series.
  • “Can only tell them apart by the freckles on their ass so happy birthday to whichever one this is,” he captioned a photo of him and Dylan on Instagram.
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Twin actors Cole and Dylan Sprouse celebrated their 27th birthdays on Sunday, August 4.

Cole is now best known for his role as “Jughead” Jones in The CW’s teen drama series, “Riverdale,” and his costars on the show shared various tributes to the star on Instagram over the weekend.

Lili Reinhart, Cole’s on-screen/off-screen muse, wrote him a “sappy” love poem amid reports they’ve broken up in real life.

Read more: Lili Reinhart wrote Cole Sprouse a ‘sappy’ love poem for his birthday amid reports they’ve broken up

http://instagr.am/p/B0u84u1AH_U

Meanwhile, Cole's on-screen/off-screen bestie KJ Apa shared two photos of the two of them, writing: "Hb. Love ya," and, "Anotha one. Hb cant."

http://instagr.am/p/B0u5NfHlgqz

http://instagr.am/p/B0u5b13FqpB

Hart Denton - who plays Chic Cooper in the show - came through with the best caption of all, though, sharing a picture of himself with Dylan, writing: "Can only tell them apart by the freckles on their ass so happy birthday to whichever one this is."

Dylan replied in the comments: "I'm the one with the tail."

Dylan is the oldest Sprouse twin, born 15 minutes before Cole. While the pair were born identical, there are easy ways, like their distinctly different hairstyles, to tell them apart.

"If you spend about an hour with my brother and I, it's quite easy to tell us apart," Cole recently said in an interview with W Magazine.

"We actually do have identical voices, that's probably the most identical part about us.

"Even the intonation with which we speak, and where we place syllabic emphasis, and basically the entire way that we speak is identical."

He left out the bit about the freckles on their asses, though.