Aaron Carter Engaged to Playboy Model

According to Us Weekly, Aaron Carter, younger brother of Backstreet Boy Nick, proposed to his girlfriend Kari Ann Peniche on stage last night in Vegas. They were planning on saying their vows Britney style at a Vegas chapel, but they decided that they wanted a more traditionally planned wedding.

Peniche, who is 22-years-old, was a Miss United States Teen in 2003, but then she took her clothes off for Playboy, and her title was yanked away from her.

Aaron Cater, who is only 18, is the youngest solo male singer to have four Top 40 singles (and why he does, I'm sure I don't know). Next month House of Carters will start on E! It will be a reality show highlighting his life with his brother Nick and their three sisters. For some strange reason, they are not including Mommy...