Everyone who’s been a part of the five-season run of “Boardwalk Empire” showed up Wednesday at the premiere of the series swan song at the Ziegfeld Theater — everyone except controversial actress Paz de la Huerta, who starred in the HBO show’s first two seasons. HBO has never said why de la Huerta didn’t return for the third season, but she was rumored to be hard to work with, and had been arrested in 2011 for a bar brawl. Still, her absence prompted plenty of pregnant pauses on the red carpet. When we asked cast member Gretchen Mol if de la Huerta had been as unpredictable on set as legend has it, Mol snapped, “I’m not answering that,” and moved along. Actress Kelly MacDonald, who worked with de la Huerta during season one, took a long pause after being asked if reports of her co-star’s erratic behavior on-set were true. “I don’t know,” she finally replied.  Actress Christiane Seidel was added to the cast after de la Huerta’s departure, and isn’t sure what to think of her. “I’ve heard many stories,” she said. “Many contradicting things, so I can’t tell you." “Boardwalk” producer Terence Winter said he ran into a healthy and happy de la Huerta at an airport six months ago, and said she would have been perfectly welcome at Wednesday’s event. “They are crazy rumors,” he insisted. “You read all kinds of stories and stuff.” De la Huerta’s agent tells us Paz missed the party because she’s in New Mexico shooting her next movie, “Bare.”  SCARLETT HAS A FRESH ROSE  Welcome to the world, Baby Ro-Jo. Scarlett Johansson (l.) has given birth to a daughter named Rose. This is baby number one for the 29-year-old Tony winner and her fiancé, 31-year-old former journalist Romain Dauriac. It’s yet to be seen if photos of Rose will surface in any of the weekly mags. Johansson is a proponent of the No Kids Policy, which aims to keep celebrities’ children out of the public eye.  GISELE PUTS PRESSURE ON TOM  Tom Brady starts another run at the Super Bowl on Sunday, but it’s his supermodel wife Gisele Bundchen who just scored a winning deal with Under Armour sports gear. The campaign, called “I Will What I Want,” is the most lucrative of Bundchen’s 20-year career, topping the $25 million Victorian’s Secret deal she inked in 2000, according to Forbes.  Clearly, it’s appropriate that Jeremy Piven’s last name starts with P. During a night of flirting with every pretty girl in the Heineken suite at the U.S. Open Wednesday, “Entourage” star Piven took a break to relieve himself, but failed to lock the bathroom door. “He was texting on his phone and peeing all over the seat,” said one mortified tennis fan who walked in on the 49-year-old actor. That sounds about right for anyone who followed Piven’s Ari Gold character on the HBO show.  AN OLIVER TWIST IN FIRING  Recently replaced Fox sports reporter Pam Oliver says she handled news of her dismissal with grace, but noticed her “hands were shaking” once she got into her car after being let go. “Some asked, ‘Do you think it had something to do with your race?’ No. I definitely do not,” she says in the October issue of Essence magazine, on newsstands Friday. But she added that “it’s not difficult to notice that the new on-air people there are all young, blond and ‘hot.’ ”  ABC is welcoming Rosie Perez to “The View,” but AARP the Magazine is welcoming her to the 5-0 club. The magazine printed up a mock cover, then tweeted out a birthday wish to the newly minted talk show host, who turns 50 on Saturday. “Born in 1964, Perez is part of the last baby boomers turning 50 this year!” said an announcement from the magazine.  Legendary East Village music club CBGB closed in 2006, but that didn’t stop the music. Jane’s Addiction, Devo and We Are Scientists will perform at the Third Annual CBGB Music & Film Festival, which starts Oct. 8 at venues throughout Manhattan and Brooklyn, including City Winery, Pianos, Knitting Factory and Bowery Electric. The latter is about 500 feet up the Bowery from where CBGB once stood. The festival will include a screening of “This Is Spinal Tap” that celebrates the cult classic’s 30-year anniversary.  Ka-ka-creepy! James Franco nimbly transforms from cute to psychopath with the help of a razor and fake mustache. The 36-year-old King of Selfies took to Instagram to debut his new shaven look. Franco’s egghead ’do is for an upcoming role in “Zeroville,” a film based on the Steve Erickson book of the same name. His transformation into “Vikar” wasn’t complete until he donned a pornstache and Gucci sunnies.  Model Coco Rocha, Alexa Chung and Mena Suvari all came to the Meatpacking District for designer Christian Siriano’s first fragrance launch. It was very uncool, thanks to a broken air conditioner. When Suvari greeted Siriano with a kiss on the cheek, she said, “It’s so sweaty in here!” Suvari told us she loves coming to New York because people here are way more creative with fashion than the folks on the West Coast. We know; we like it here, too (when the air conditioning works).  School days, school days, dear old golden rules days. Celebs shlep kids to school just like regular folk — only everyone involved looks a little more fabulous. Sarah Jessica Parker and Matthew Broderick’s adorable twinnies, Marion and Tabitha, looked appropriately stylish for their first day back.  JOEY PANTS NOW A HEAD GUY  Joe Pantoliano, aka “Joey Pants,” thinks we don’t talk about mental health enough. “The Sopranos” actor told Confidenti@l that he started his foundation, “No Kidding, Me Too!” to “empower emotional intimacy with another human so that you feel less alone,” he explained at the Cinema Society premiere of “The Identical” on Wednesday night. Pantoliano joined Ray Liotta at the after-party at the White Street Restaurant.
The“Boardwalk Empire” season premiere at the Ziegfeld didn't attract controversial actress and ex-cast member Paz de la Huerta.