It was a blowout to end all blowouts! The entire Kardashian clan hooked up at The Blind Dragon karaoke bar in West Hollywood Sunday night to celebrate Khloe's 33rd birthday. Khloe appeared to have her present in her hands -- in the form of a tall basketball player wearing a very dapper get-up -- seriously, Khlo looks SO happy when Tristan's in town!

While we're DYING to know 1) what Tristan got Khloe for her birthday (a ring???!!!), we're also DYING to know 2) who lip-synched to what songs inside the bar! Did Kanye rap to A$AP Rocky lyrics and A$AP recreate "High Lights"? Did Kylie sing a Tyga track? Maybe Kris did a karaoke standard like "Wind Beneath My Wings"?

Speaking of Kris, she invited pal Melanie Griffith, while Kourtney came with Kim's personal assistant Steph Shep. Kanye arrived solo -- and Kim entered separately, through the underground parking garage, as did brother Rob. Yes, Rob Kardashian left his Calabasas couch for this!

Kylie arrived with BFF Jordyn Woods and Kendall showed up with a pal, but not after dining at Craig's with A$AP just before. Rocky arrived separately, but those two were TOTALLY together.

Looks like a fun party! Happy birthday, Khloe!

What's age got to do with it?!

Jennifer Lawrence certainly isn't hiding the age difference between her -- 26, and her director boyfriend Darren Aronofsky, 48. The pair are just low-key and not very public about their love lives. But JLaw stepped out with her man -- hidden behind her Chloe bag -- at Nobu Malibu this weekend, as the down-low lovers enjoyed some sushi on Saturday night.

Jen brought along a third wheel -- her pup Pippi Lawrence-Stocking ... we wonder how she kept him away from the sashimi and edamame!

The west coast vibe was a welcome break from a recently stressful time -- Lawrence was on a private plane, flying to New York, when the plane suffered engine failure and had to make an emergency landing. Fortunately the Hunger Games actress escaped uninjured.

But a little misadventure didn't stop Lawrence from participating in this really awesome celeb-studded video urging voters to call their senators after Republicans proposed their version of the American Health Care Act, which would de-fund of Planned Parenthood. Check it out ...

It's certainly not the first time we've wondered, pondered and contemplated Iggy Azalea's derriere and it probably won't be the last! But our new pix of Iggy at Malibu's Mastro's Steakhouse over the weekend have us questioning, yet again, whether the Australian singer has undergone some sort of plastic surgery on her backside ...

After the sexy chanteuse posted numerous sexy selfies and belfies recently, during a vacay in Mexico, fans got to wondering if -- and accusing -- Iggy about the possibility she's had butt implants. She all but denied the question when asked on MTV's Wild 'N Out not long ago but did anyone ask her about butt INJECTIONS?

We think her junk looks really similar, albeit slightly smaller, than Kim Kardashian's. And Iggy's copped to having her nose and her boobs done, so maybe she got a 3-for-1 deal from her doctor and did a bit of booty enhancement as well??? Sorry, Iggy -- it just looks too good to be true!

Style before comfort isn't always the best mantra when you're dressing a four-year-old for her birthday party!

Kim and Kanye's daughter Nori certainly looked adorable on her big day yesterday but she appeared to be slightly uncomfortable in her Moana costume as she celebrated her big day at a Polynesian-themed party based on the Disney movie in the back yard of her family's Bel Air home.

Cousin Penelope looked a bit happier -- and how cute is that long, brunette wig! She posed with Kim's pal Larsa Pippen's daughter in the living room of Kim and Kanye's manse.

Meanwhile, Kourtney enjoyed the surf simulator/bouncy and famous friends like Jaden Smith attended, arriving hand-in-hand with one of his bros. Hmmm ...

Anyway, the family was all there and North West had TWO cakes for the occasion. Despite the scratchy leaf crown, we hope little North had some fun!

Blac Chyna dragged her tattooed T&A to Maxim's Hot 100 party in LA Saturday night, just hours after she was the recipient of a rear-ender. No, it's not what you might think -- an allegedly drunk drive rammed Chyna's Rolls Royce from behind in the early hours of Sunday morning. Yikes!

Seems the former stripper is okay -- all her bits appeared to be intact. And she showed of literally everything in a lace robe and skin-tight bodysuit underneath. We're getting more of Chyna here than Rob is, that's for sure!

Lawd have mercy! No need for alarm, folks, but Rihanna's booty has gotten to a new level of juicy and we love it!

The singer showed off her juicy curves in a Juicy sweatsuit at LAX Saturday as she jetted out of LA. We love that she's not trying to hide her new curves -- heck, dudes love this, why would she?!

After a dumbass sports report fat-shamed BadGalRiRi a month ago, Rihanna hit back with a nasty meme targeted at the male chauvinist pig and her fans rallied around her. Let the girl love life, love her pasta at Giorgio Baldi and be real!!!

Reunited and it feels so good!

Khloe Kardashian brought beau Tristan Thompson home to LA for the weekend and boy does she look happy and in her element! The wet-hair styled beauty stunned in a sexy off-white silk slip dress, sans bra, for an evening at Nobu Malibu with Tristan's pals. They were celebrating a member of his entourage's birthday and boy do those Cleveland boys have a style! Throwback tees abounded -- Tristan's tribute to Tupac (appropriate since the biopic All Eyez On Me hit theaters this week) was one of many worn by the group. But hey, even Nori's getting in on the trend!

Khloe appeared to be a having the time of her life with Tristan and his pals -- our photographers tells us, "Khloe was over the moon; I haven't seen her so happy in a long time. She also loved being the center of attention with Tristan and all the guys. Tristan enjoyed showing her off."

Looks like these two are the real deal; they've been dating since September and as Khloe's biological clock is ticking -- she's 32, he's 26 -- we have a feeling an announcement is coming soon ...

Show them shoulders! Hailey Baldwin is one of Hollywood's hottest young models and while she's BFFs with Kendall, Gigi and Bella, she hasn't quiet reached their supermodel status, but she's hot on their heels!

Especially in this sexy get-up ... we caught up with Hailey at Catch Friday night where she was definitely showing some skin. She took a cue from Kim's off-the-shoulder trench coat style (a la Paris, October 2016) and upped it a notch by unzipping and pulling the solders down on her sweatshirt underneath. How creative!

The model paired that with thigh-high nude leather platform boots on a balmy LA evening and while she had to balance in her 5-inch heels, strategically hold the center of there mini-trench so it wouldn't slip off, she did it with ease, while making the paps sweat!