Ben Affleck has moved on! He's the happy dad, taking care of his kids every day -- school drop-off and pick-up and froyo runs and everything -- and it seems he's let his relationship with Lindsay Shookus go ... 'cause she's moved on, too!

Shookus shook us with the news she is hanging with hottie Mad Men actor Jon Hamm in New York. The two were spotted Broadway show Derren Brown: Secret on Sunday on a date! According to an Us Weekly source: "The two sat next to each other and Jon was right next to the aisle. They weren’t hiding anything! Lindsay and Jon didn’t show much PDA, but there was definitely some flirtatious banter. Lindsay turned her head to talk to Jon before the show, during intermission and after the show. She was always smiling and looked like she was enjoying her conversations with Jon."

The two left separately and another source tells the mag the two have been friends for decades and have a platonic relationship. But hmmm ... what do YOU think?

Katy Perry's gotta get some practice! As Orlando Bloom's fiancee, she'll soon be in charge of co-parenting his son Flynn, along with the boy's mom Miranda Kerr (who's got another child with new hubby Evan Spiegel of Snapchat fame and a second one on the way!).

The trio dined at Nobu Malibu Saturday night -- and boy was that place busy! Mariah Carey was there with ex Nick Cannon and their twins Moroccan and Monroe and Sofia Richie enjoyed the seaside hotspot's famous sushi with her brother Miles, her mom and some friends, celebrating a pal's birthday. Talk about an A-list night!

Meanwhile, we happened to spot Katy's ex-husband Russell Brand at LAX with her adorable daughter Mabel -- first time we've seen her! The funnyman and his adorable girl made their way through the terminal to a waiting car.

Hailey Baldwin isn't taking a back seat to her supermodel friends like Kendall Jenner and Bella and Gigi Hadid -- she's out front with her own style! Mrs. Bieber tells Vogue Australia she was intimidated by some of her model pals when she started out because they're taller, more fit for runway, and she's short (5'9"!). But as it turns out, she worked it to her advantage ...

"Looking tall" in print was easy and with her sharp features, her California blonde good-looks (even though she's a native New Yorker) and her long, lean frame, she was a natural -- she just had to find her groove.

We spotted Hailey out in a cute altheisure look the other day -- a pullover black windbreaker with a Balenciaga bum bag, blue camo Spandex biker shorts, and Off-White Nikes. In speaking to Vogue, Hailey says despite looking AMAZING in tight clothes, she actually prefers oversized looks because it's more unexpected on a girl with a slight frame.

DB: “The last time I saw you, you were wearing an oversized Jacquemus suit. I think it’s funny to see all these slight girls in their oversized attire.”

HB: “I like it! It’s easy to be a small girl and wear small clothing. It’s expected for a girl with a fit body to want to wear tight things all the time, but to me, it’s cooler for a young girl to do the tomboy-but-chic vibe.”

DB: “If I had a body like you I’d wear Spandex all day every day.”

HB: “I think there’s always opportunity to wear the little dress, you know? I still wear my fair share of crop tops, but I’m more comfy in my baggy stuff.”

The model goes on to discuss her marriage to Justin Bieber, of course, discussing how they've found their groove as a married couple:

HB: “A zillion people who had a zillion opinions. Now it’s easier, because we’ve found a rhythm. We have more fun together, which is what should happen when you spend more time with someone you love.”

DB: “If you could give one lesson you’ve learned about being in a relationship, what would it be?”

HB: “Compromise. If you don’t want to compromise you can’t be in a relationship.”

Good advice!

Check out these beautiful pix Hailey Instagrammed from the Vogue spread -- hint: she's naked under all those oversized coats!

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@vogueaustralia October Issue. Shot by @lachlanbailey styled by @christinecentenera interview by @derekblasberg 💕 thank you thank you thank you!

A post shared by Hailey Rhode Bieber (@haileybieber) on Sep 15, 2019 at 11:21am PDT

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new @vogueaustralia shot by @lachlanbailey and styled by the amazing @christinecentenera 💕💕

A post shared by Hailey Rhode Bieber (@haileybieber) on Sep 15, 2019 at 11:18am PDT

Felicity Huffman -- just a day after being sentenced to two weeks in jail for her role in the Varsity Blues college admissions scandal -- spends time with daughter Sofia in LA before doing time.

Felicity and her eldest daughter brought homemade cupcakes to a teen rehab facility in the Valley as a gesture of good will towards the Desperate Housewives star's mandate to do 250 hours of community service. Of course she was also sentenced to two weeks in jail and a $30,000 fine. Do you think she got what she deserved?

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Me by @travisscott for @playboy. ♥️♥️ See the full story on playboy.com. Photography by @sashasamsonova

A post shared by Kylie ✨ (@kyliejenner) on Sep 13, 2019 at 8:31am PDT

Kylie Jenner's Playboy cover is an "artsy" shot of her cleavage shot by Travis Scott, according to Ky's Instagram post. The Lip Kit billionaire holds her gel-tipped nails between her bust, leaning toward the camera, without her face in the shot. Hey -- perhaps the correct interpretation of this is that her face doesn't matter ... it's all about the boobs!

Jenner posted some other pix we assume are from the shoot. And Playboy's got the text of the interview by Scott online. Here are some awkward highlights in which Travis kind of refers to himself in the third person or acts as if he doesn't know the answers to the question he's asking, when of course he does:

• SCOTT: Why do you think our relationship works? And why do you think we knew it worked so quickly?
  JENNER: We think the same and we have the same goals and passions in life. Besides the fact that we have good chemistry, we have a lot of fun together. You’re my best friend. Through all the ups and downs that every relationship has, we evolve together through them and keep getting stronger.
  
  
• SCOTT: A lot of people claim that having a baby can hurt your sex life, but I feel like that’s the opposite of our experience.
  JENNER: Yeah, I feel like we’ve definitely proven that rumor to be wrong. [laughs]

Laughs!

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☁️✨🕊

A post shared by Kylie ✨ (@kyliejenner) on Sep 13, 2019 at 11:02am PDT

Friendly exes! Mariah Carey and ex-hubby Nick Cannon co-parent like stars, dining out with their twins Moroccan and Monroe at Nobu Malibu. Lucky kids!

The 8-year-old twins looked sleepy as they left the restaurant with their parents -- Monroe had her iPad in hand to keep her busy as she was carried by dad.

Miss Diva was stunning in a black dress, smiling for our camera and waving. A little spicy tuna does her good!

Sofia Richie doesn't do ONLY Kardashian events! The young model chilled with her brother Miles and her mom to celebrate the birthday of a family friend at Nobu Malibu, on Saturday night.

Richie, 21, posted pix of the family's day-long celebration -- including shots with her mother, calling Diane Alexander her "best friend." Awww!

FINALLY! Kim Kardashian put her leather pants in the closet and broke out a vintage Versace silver sequin skirt last night at Saks Fifth Avenue Fashion Week event in New York.

Mrs. West has worn her new black leather trousers to her past THREE outings in the city -- check out the timeline below ...

1) with a silver sequined top for lunch at Cipriani Downtown with pal La La Anthony, sis Kendall Jenner, and bestie Jonathan Cheban on Wednesday
2) dinner out Wednesday night at Milo's -- again, with La La -- with a black halter top
3) Thursday night, now with a snakeskin top, after appearing on The Tonight Show Starring Jimmy Fallon

She's also loving her square-toed strappy heels to go with the pants -- she wore those suckers all three times, too. Give the look a rest, Kim! We need you to switch it up more often!