‘The Pitt’ co-stars unite, Broadway takes over Katz’s Deli and more celebrity sightings

Stars were supporting their colleagues all across Manhattan last week.

Patrick Ball’s “The Pitt” co-stars turned up to support him at Broadway’s opening night of “Becky Shaw” last Monday.

Isa Briones, Supriya Ganesh, Sepideh Moafi, Brandon Mendez Homer, Lucas Iverson and Laetitia Hollard were all in tow at the afterparty held at Yard House in Times Square. Also there was Ball’s girlfriend and co-star, Elysia Roorbach.

We’re told the show’s headliner, Madeline Brewer, shut down the party while celebrating with close friends Peter Dinklage, Erica Schmidt, Hamish Linklater and Lily Rabe.

Other stars in attendance included Jesse Eisenberg, Nina Dobrev and Kelly Bishop.

That same night, A-listers flocked to the opening night celebrations of Broadway’s “Cats: The Jellicle Ball” at Pier 60.

A Page Six spy spotted Andrew Lloyd Webber, John Legend, Law Roach, Jeremy Pope, LaChanze, Michael Bloomberg and many more.

We’re told the afterparty went until 3 a.m. with Tony & Grammy Award-winning Andre de Shields holding court while cast and creative team members brought the ball to the dance floor – performing signature ballroom moves seen in the show.

The cast of “Proof,” including Ayo Edebiri and Don Cheadle, also stopped by the fête to congratulate the team on a fantastic show.

On Tuesday night, “Gossip Girl” alum Kelly Rutherford and perfume master Véronique Gabai celebrated the launch of their new scent at Printemps New York.

Guests hit the suave store’s Salon to sample Rose Première by Kelly Rutherford and sip on some bubbly with an intimate celebration.

Two nights later, Nathan Lane and Laurie Metcalf celebrated the opening of “Death of a Salesman” at the iconic Katz’s Deli.

“The entire cast of Laurie Metcalf’s new Netflix show ‘Big Mistakes’ turned out to support their co-star, including creator Dan Levy,” a source said.

We hear Kelly Ripa and Mark Consuelos were there to cheer on son Joaquin Consuelos’ Broadway debut, and “Mad Men” co-stars Kiernan Shipka and John Slattery reunited over huge pastrami sandwiches.

Guests also included Lily Rabe and Hamish Linklater, Emily Mortimer and Alessandro Nivola, Betty Gilpin, Paul Dano and Zoe Kazan, and Aubrey Plaza.

This is the first time a Broadway show has celebrated its opening at the beloved delicatessen on the Lower East Side.

Celebrities continued to make the rounds Sunday night at the afterparty for Broadway’s “Titanique” opening night.

Show stars Frankie Grande and Jim Parsons were in high spirits at the soirée, where we’re told “Drag Race” alum Peppermint lip-synched to “Nobody’s Supposed To Be Here,” and Layton Williams and Deborah Cox danced to “Absolutely Not.”