Shortly after Britney Spears sent us the following list, she tweeted that her single "Oops!... I Did It Again" had just turned old enough to get a learner's permit. The pop survivor has packed a lot into her 33 years, and she shows no signs of slowing down: her Las Vegas residency, Britney: Piece of Me, is one of the hottest tickets on the strip; she recently launched a lingerie line, Intimate Britney Spears; and, if the photos she posts on Instagram are any indication, she seems to be blissfully in love. Here are 10 things that make her smile. It's Britney's Happy Ending, bitch.