Jamie Lynn Spears, engaged at just 21, joins a whole host of young brides in Hollywood. The Huffington Post rounds up 25 under 25:
- Megan Fox married Brian Austin Green when she was 24.
- Hilary Duff wed Mike Comrie at age 22.
- Heidi Montag was 22 when she married Spencer Pratt.
- Elizabeth Taylor's first marriage, to Conrad Hilton, took place when she was 18.
- Mandy Moore married Ryan Adams when she was 24.
- Melanie Griffith wed Don Johnson when she was 18.
- Dolly Parton was 20 when she married Carl Dean.
Click for the complete list of marriages
, most of which, shockingly, didn't work out. (Read more Jamie Lynn Spears