Seersucker

We have a question! And it is from a clergy spouse, a favoured target for advice in churchlady circles. How exciting!
Q. Dear Church Lady, My spouse wants to wear seersucker on Easter Sunday. I think he should wait until Whitsunday. Please advise. 
A. Dear Consider-the-Lilies, At least Whitsunday, and then only until dawn on The Day of Pentecost. ​