In Texas, when someone asks, "How soon after my divorce can I get remarried?" or "Is there a waiting period for when I can remarry after my divorce?" I point out Texas Family Code 6.801.
"...neither party to a divorce may marry a third party before the 31st day after the date the divorce is decreed. the former spouse may remarry each other at any time."
Some clients have been separated so long that they meet, date, fall in love, and plan a wedding with a new partner before their old divorce is finalized. Wedding plans get made and then have to be rescheduled to avoid this prohibition. There are judicial remedies available for emergency purposes, but for the most part it is good advice to finish your old marriage before starting a new one.