“Celebrity Apprentice” finale… Ray J’s girlfriend beat him up… Huge SNL40 after-party Sunday night… Lady Gaga got engaged on Valentine’s Day… and Epic Twitter war between Khloe Kardashian and Amber Rose

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Spoiler Alert: On last night’s live “Celebrity Apprentice” finale, it was Leeza Gibbons going head-to-head against Geraldo Rivera. And when the dust settled, Donald Trump named Leeza the winner! Her winnings go towards her charity, Leeza’s Care Connection. And Donald also announced that ratings were so good that NBC is bringing back the show for another season.

Ray J’s girlfriend was arrested after beating him to a bloody pulp! He and Princess Love were in New Orleans last week and she was in their room at the W French Quarter Hotel waiting for Ray J to get back from a strip club. When he finally showed up at 3am, Princess went crazy nuts, busting his lip, cracking several ribs and tearing a ligament in his knee! Somebody staying at the hotel heard her scream, “I’m gonna kill you!!” A security guard saw Ray J bleeding and called 911. Police arrested Princess Love and charged her with domestic abuse and battery. But here’s the thing!! Ray J went down to the police station, bailed her out, AND paid $10K for her lawyer!!!

There was a huge SNL40 after-party at the Plaza in NYC Sunday night. Miley Cyrus jumped onstage with Ariana Grande, Jimmy Fallon and Debbie Harry. Paul McCartney performed with Taylor Swift and Dan Aykroyd, and Bill Murray got on stage with Prince to play the tambourine!! The only guest who wasn’t up for fun? Justin Timberlake! Sources told Page Six that Jimmy Fallon kept yelling for him to get up on stage but I guess he just wasn’t feeling it.

Lady Gaga got engaged on Valentine’s Day to her longtime boyfriend Taylor Kinney. She posted a picture of her gigantic heart-shaped diamond on Instagram Monday. After the proposal, they celebrated at her family’s restaurant, Joanne’s Trattoria. Gaga and Taylor first met when he appeared in her “You and I” video back in 2011. Ironically, Gaga wore her mom’s actual wedding gown in the video! They started dating several months later…broke up for a bit in May 2012…then got back together in June and have been together ever since!

There’s an epic Twitter war playing out between Khloe Kardashian and Amber Rose, who fired the first shots when she called out Tyga for dating Khloe’s 17-year-old sister, Kylie. Khloe tweeted in defense of her sister and the fight was ON. Khloe tried to keep it classy, but Amber hit below the belt, bringing up that old rumor that OJ Simpson is Khloe’s real dad. Interesting to note that Kim Kardashian’s ex Reggie Bush has started following Amber and Amber’s ex Wiz Khalifa has started following Khloe. They’re taking sides!!