Helen Lambert is Serena's sewing teacher. She appeared in Sailor Moon Episode 13, Wedding Day Blues. She was going to marry a man named Herbert, and enter a wedding dress contest to win a trip to Hawaii, but as she was picking out material for her wedding dress, Neflite implanted Black Widow's essence into it, turning her evil. She got into a fight with Herbert, which seemed to cancel the wedding. After she drained the energy of the audience of a wedding dress competition, Black Widow appeared, but was destroyed by Sailor Moon. Miss Lambert was returned to normal, and married Herbert, winning the trip to Hawaii.