he looks 8 or 9yrs old
The case of the 13-year-old who has fathered a baby highlights a worrying trend of "children having children", the Tory leader has said.
David Cameron was speaking after Alfie Patten's girlfriend Chantelle Steadman, 15, gave birth on Monday.
Latest figures from UK National Statistics show there were 7,826 conceptions in under-16s in 2006 - down 1,000 from 10 years earlier.
Sexual health experts said teens should be encouraged to have "ambition".
Children's Secretary Ed Balls said it was an "awful" and "unusual" case.