4 Stars Who Got Engaged on Their Birthdays

Kanye West proposed to Kim Kardashian on her birthday, but it wasn't exactly an original idea. Perez Hilton rounds up more celebrities whose engagements were also a birthday present:

• Justin Theroux proposed to Jennifer Aniston on his birthday.
• Britney Spears got engaged to Jason Trawick on her birthday ... of course, it didn't work out in the end.
• Swizz Beatz proposed to Alicia Keys on her birthday.

Click for the complete list—or check out celebs who had extravagant proposals. (More celebrity stories.)