<prompt> Sign of pubey in boys isEnlargement of penisEnlargement of testesAppearance of pubic hairAppearance of axillary hair  <response>: In girls, the first visible sign of pubey is the appearance of breast buds Thelarche, between 8-12 years of ageIn boys the first visible sign of pubey is testicular enlargement, beginning as early as 9 12 yr.Refer: Nelsons Textbook of Pediatrics, SAE, 1st edition, pg no. 926 