Punky Brewster - S03E09 - The Metamorphosis.

One night after dinner, Punky decides that she needs to talk to Henry about the life-altering event that she may need her first bra. A desperately embarrassed Henry calls Betty, but his comments about not wanting to see Punky grow up are overheard by Punky. As Betty attempts to talk to the girls about the changes they’re going through, Punky storms off, thinking Henry will no longer love her when she grows up. Henry has to deal with things himself now, and during an uncomfortable trip to a store’s bra section, Punky tells Henry what she overheard him saying to Betty. Punky and Henry have a talk that straightens things out as Henry explains to Punky that he’ll always love her, no matter what.