The return of Puff Daddy took a back seat to the emergence of a former Mouseketeer.

Further proof that teen-pop will define the year in music sales, Christina Aguilera debuted at No. 1 with her self-titled RCA debut, according to sales data for the week ending Aug. 29. Her disc, preceded by the chart-topping single “Genie in a Bottle,” sold almost 255,000 copies, a good 45,000-plus more than Puff Daddy’s “Forever’ disc (Bad Boy), which placed No. 2.

Last week’s No. 1, the Backstreet Boys’ Jive disc “Millennium,” slipped to No. 3 on sales of slightly more than 200,000 copies. Limp Bizkit’s “Significant Other” held steady at No. 4 on sales upwards of 140,000.

Rapper Noreaga was the third artist to debut in the top 10 this week as his “Melvyn Flynt Da Hustler” went home with 110,000 consumers. Rapper Kid Rock’s “Devil Without a Cause” (Atlantic) beat Noreaga by less than 200 units to take the No. 8 slot.

Other debuts this week include Sevendust’s “Home” at No. 19 (62,000 sold), LFO’s Arista disc selling more than 60,000 for No. 21 and Reprise rockers Filter clocking in at No. 30 on sales of 45,000. Warner Bros.’ Prince compilation, “The Vault: Old Friends 4 Sale,” sold 16,000 copies.