AARON CARTER - YOUNG STARS KNOCKED BACK FROM BILLBOARD AFTER-PARTY

Young singers ASHLEE SIMPSON, CIARA and AARON CARTER were left red-faced on Wednesday (08DEC04), when they were refused entry to USHER's post-BILLBOARD MAGAZINE MUSIC AWARDS party.

Simpson, 20, Ciara, 17, and Carter, 17, attempted to mingle with NICK LACHEY, PARIS HILTON, TARA REID, LIL' JON, MAROON 5, JERMAINE DUPRI and NICOLE RICHIE at the MGM Grand's new Teatro Lounge, to celebrate the 10th millionth sale of Usher's CONFESSIONS album and his 11 Billboard gongs.

However, astute bouncers demanded the youngsters show ID and turned them away because they weren't the Nevada legal drinking age of 21.