She continues: "He [weighed] 8-3/4 pounds (4 kg) and was 21 inches (53 cm) long [at birth]. There were no complications, and both he and his mother (and father!) are doing very well. Welcome, welcome, Little One!!! --Kenna, Princess (and amazingly ecstatic Aunt!)"
Metric equivalents for birth length and weight added during editing. —Justin