They grow up so fast! Selena Gomez — part singer, part actor, and sometimes Justin Bieber's girlfriend — just listed her Tarzana home in Los Angeles for a nice $3.495 million. Purchased back in 2012, the nearly 7,000-square-foot home boasts six bedrooms, eight bathrooms, and plenty of space to play outdoors. Celeb-worthy details include a tennis court, basketball court, private gym, and lavish guest suite. But it's likely the home won't be missed too much by the former Disney star. A few months ago, Gomez purchased this massive Calabasas, CA, mansion . . . right before she unfollowed her famous neighbors on Instagram (oops).