JAILED!

Remember this photo from earlier in the week? This is how Tuesday night started for Courtenay Semel — but it’s not how it ended. It ended with Courtenay TRASHED and IN JAIL.

COURTENAY Semel, the wild-child lesbian daughter of former Yahoo chief Terry Semel, went on a tear Tuesday night in Las Vegas and ended up spending the night in jail. Semel showed up in the party town without new girlfriend Tila Tequila and started the night at Sushi Samba in the Palazzo with Kourtney Kardashian. “They were filming their dinner for ‘Keeping Up With the Kardashians’ ” our spy said. Later, Kardashian called it a night and Semel went out to Pure at Caesars with Vegas showman Jeff Beacher – and proceeded to “go nuts,” a spy said. “Courtenay got so drunk she was falling down. Security asked her to leave, but she refused.” Semel finally left, but on her way out there was an altercation with a security guard. “She was arrested and spent the night in jail,” a Semel pal confirmed. “And she lost her phone.

Oh, Courtenay. Maybe you’re just what we need around here. It’s, like, you’re the socialite who grew up around Paris and Nicole and Kim, and you desperately wanted to be famous, too, but you really weren’t pretty enough. You’ve had several false starts at stardom — with Filthy Rich Cattle Drive and a fling with Lindsay Lohan — but nothing really stuck. But now the other girls are all settling down and moving out of the spotlight, and you’ve had all these years to plot, and you are so ready to bring it with the lesbian angle and the drunken angle and the jail angle.

Welcome, Courtenay. You’ve earned it.