Paris Hilton Credit : Amy Sussman/Getty Images

Paris Hilton had the best time of her life as she turned 40.

In just one day, the hotel heiress celebrated two milestones in her life--first is her birthday and the second is her engagement with boyfriend, Carter Reum.

The hotel heiress and his now fiance, who is an entrepreneur and M13 Ventures founder are now ready to move onto the next chapter of their life after only dating for a year.

Paris Hilton's Beauty Secrets