How will people look like when resurrected?

From my understanding, it said in the Holly Scripture that in the first resurrection people will be resurrected in "imperishable" and "immortal" form. They will probably be resurrected in the form in which they died - grandmothers like grandmas, children as children, adults as adults, but without the trace of sin on themselves. The purpose of this form of resurrection is for people to be able to recognize each others.