The Jonas Brothers dine at L’Avenue at Saks, Mia Calabrese happy hours al fresco and more sightings

“Summer House” star Mia Calabrese hosted an al fresco happy hour with her closest friends at Sadie’s Garden Bar in The Seaport last Tuesday.

“Spritzes were flowing and the group soaked up every last bit of summer with a sunset view,” a source told Page Six, adding, “They were taking tequila shots and having so much fun.”

That same evening, Isla Fisher, Anna Faris, Michelle Buteau and Leslie Mann surprised guests at the sreening of “Spa Weekend” at The Whitby Hotel.

“Buteau even stayed to watch the movie with press, as she would cheer during her big scenes,” a partygoer shared.

The screening featured massages by Hand & Stone and bra fittings by Soma, as well as popcorn and a candy bar.

On Wednesday night, Nick Jonas, Joe Jonas and Kevin Jonas dined at L’Avenue at Saks ahead of night three of their Jonas Brothers tour at Madison Square Garden.

We’re told the brothers were coming from an appearance at iHeartRadio before hitting the hotspot with their dad.

“The boys enjoyed dinner together before stopping to pose for photos with fans throughout the restaurant,” an insider shared, noting that Joe was “strutting” around and Kevin was “in cool sunglasses.”

We’re told they arrived at around 7:15 p.m. and made their way out a few hours later.

Over in Brooklyn, “Summer House” star Carl Radke joined Strava for a night of movement, community and a sneak peek of the company’s strength experience.

The event began with a group workout at Liftonic, followed by a conversation at Radke’s alcohol-free bar, Soft Bar + Cafe, which was moderated by “Summer House: Martha’s Vineyard” star Nick Arrington.

We’re told the Bravo personalities discussed softness, sobriety, and what recovery actually looks like when your life is always on the move.

Last Friday, Mike Tyson took over Sugar Factory Times Square by hosting a special preview of the brand’s new Protein Sliders.

Fans at the event were able to chat with the boxing legend one-on-one and he even posed for photos with partygoers.

“Tyson dug into the sliders himself and was in great spirits and having a great time throughout the day,” a source on site told us.

We’re told attendees sampled the Protein Sliders with customizable toppings alongside a selection of Sugar Factory’s signature food and drink offerings

After the event in the city, Tyson made a surprise visit at a ShopRite in Somerville, New Jersey, where we’re told he ahd a “sweet encounter” with an expextant couple who told him they nicknamed their baby after him.

“The couple brought along a ‘Baby Mike Tyson’ onesie,’ and Mike signed both the onesie and their sonogram,” we’re told.

His appearance marked the Northeast launch of Sugar Factory at Home’s Protein Sliders, which are now rolling out at ShopRite locations across New Jersey, Connecticut, Delaware, Maryland, New York and Pennsylvania.