Don't ask, don't tell - S3-E12
Trivia: At the beginning of Charlotte's wedding, they are playing an actual Scottish funeral dirge. This is to symbolize Charlotte losing herself in a bad marriage. (00:22:30)
Don't ask, don't tell - S3-E12
Trivia: During the scenes when the girls are trying on their bridesmaid dresses, they were actually filmed in the real Vera Wang dress shop. (00:05:00)
Answer: Yes, it is.