The One With The Invitation - S4-E21
Corrected entry: Phoebe shows Ross' invitation to everyone, stating "Ross let Ben address mine." The envelope has poor kid like handwriting. The address is a 4 line address and the invitation also has stamps on it. When the camera comes back to Phoebe, she's holding an envelope with just her name on it, with no stamps. When she puts down the envelope by her side, the 4 line address is back. (00:11:30)
Correction: Yes, there are two larger envelopes, but they are not meant to be the same envelope, it's wedding invitation etiquette. The actual invitation itself is inserted in the "inner envelope" with only Phoebe's name written on it (or as 'Phoebe and friend'), and this inner envelope is inserted in the "outside envelope" along with the reply card (in the small envelope), and it's the outside envelope which is stamped and addressed to Phoebe ("4 line address"). We even see Phoebe holding both larger envelopes while removing the reply card's small envelope, just as Monica says, "This is so amazing," and also see them when Rachel opens her own envelope.
Super Grover ★