The White Rabbit is running late and so missed a birthday or an anniversary.  Regrets.  Inside: "Sorry we're (I'm) late, when there's so much to celebrate!" "Happy Birthday!" or "Happy Anniversary!" Printed on white card stock, measuring 4.25" x 5.25", these cards come with accompanying white, self-sealing envelopes.  Fun way to recognize a missed occasion.  Specify "We're late" or "I'm late" and whether a birthday or anniversary.