Scottish actor Gerard Butler is no stranger kilts, but wearing the traditional pleated skirt hasn't always gone as planned.

During an appearance on "Conan," the star recounted the time he flashed the entire congregation his sister's wedding.

Butler explained he was doing a reading on the altar when his mother alerted him to a wardrobe malfunction. He said his mom was signaling to him that his kilt had come open and she was trying to tell him to close his legs.

"I look down... and my kilt is spread wide... facing the whole congregation. So I slowly like cross my legs."

According to CNN, Butler confirmed he was not wearing any underwear at the time of the mishap.