Queen Latifah was 29 years old in 1999, since she was born on March 18, 1970.

Quick math

  • Born: March 18, 1970.
  • In 1999, she had already turned 29 by the time of the March 15, 1999 interview, so she was still 28 on that specific date and turned 29 three days later.

TL;DR

In 1999, Queen Latifah was 28 or 29 , depending on the exact date; for most of the year, she was 29.