Inqlings: About Sweet Dee's tummy issue . . .

One of the main plot points on the forthcoming sixth season of the FX comedy

It's Always Sunny in Philadelphia

will be the pregnancy of Sweet Dee, played by

Kaitlin Olson

.

Olson, due with a boy in August, was in town last week to shoot scenes with her husband/costar/show creator, Rob McElhenney, a St. Joseph's Prep grad who grew up in South Philly and Delaware County. They avoided showing the unattached barmaid's tummy in the early episodes, but had to address the issue.

But how? Boyfriend? Or maybe . . . immaculate conception?

"We're not going to say no," said Olson in an interview. The couple, who married in September 2008, redirected the topic to name choices. "We've narrowed them down to Milksteak Jellybean, Dumpster Boy, or Tobacco Mac," said McElhenney. "It's easy to work with this last name. You just need as many syllables as possible."

(Told about the names later, McElhenney's mother, Helena, shuddered and said she just hoped her first grandchild would be healthy.)

The couple attended Wednesday's grand-opening party for Mac's Tavern, an Old City bar that has as many investors as it has beer taps. McElhenney and Olson have a share of the place, as do some of McElhenney's Prep-mates. Also in the house were Always Sunny's Glenn Howerton and Danny DeVito (who left the party in, appropriately enough, a taxi, but rode in its front seat).

Preston Elliot, half of WMMR's Preston & Steve morning show, has a piece, too. Elliot, who with on-air partner Steve Morrison will be seen in an episode next season, says he probably won't be a regular. He pointed out that he's a father of three who lives in the suburbs and gets up at 4 a.m. every day.

Dozens of extras are needed for a hip-hop video to be shot Thursday at Club Fluid in Queen Village. Filmmaker

Frank Petka

is behind the production, featuring aspiring Philly artist Nidice (

Kevin Estes

). E-mail

» READ MORE: July1stVideoExtras@yahoo.com

for sign-up.

Clear Channel's Philadelphia radio stations shed staff last week. Power 99's Golden Girl was relieved of her middle-of-the-night show - ending a 20-plus-year affiliation. Also gone is Richie Rich, the mixer/DJ/remote host who had been at Q102 and later at My 106.1 for 18 years full and part time.

Fox29 will air the six-week run of The Kilborn File, comedian/talker Craig Kilborn's new show. Premiere is 7 p.m. Monday.

Quinton Aaron, who starred with Sandra Bullock in The Blind Side, will join actress Helena Cortez in a program, "Engaging Parents and Students Through the Arts," at the School District of Philadelphia (440 N. Broad St.) at 5 p.m. Tuesday. The program is free, but registration is required: 215-400-5877.

Justin Bieber's

dressing room Thursday at the Sun National Bank Center in Trenton was done up like a giant playroom. Xbox sponsors the 16-year-old's tour.

Courtney Love and Hole performed a set at the studios of WRFF (104.5) before Thursday's appearance at the Electric Factory. The station posted excerpts, including her thoughts on Trent Reznor and Jared Leto, at www.Radio1045.com.

Robert Redford joined a dinner party at Barclay Prime on Rittenhouse Square on Wednesday, the night before speaking on "Cultivating a Creative Workforce" at a seminar sponsored by the Arts and Business Council of Greater Philadelphia and Towers Watson.

Sixers alumni Julius Erving, Moses Malone, Clint Richardson, Gerald Henderson, World B. Free, team president Ed Stefanski, and coach Doug Collins broke bread at the Capital Grille on Broad Street, on the eve of Thursday's draft party at the Wachovia Center. Malone threw out the first pitch at Thursday's Phillies game and took batting practice in the cages with coach Milt Thompson. The NBA hall of famer hits like a power forward.

Former FBI Special Agent

Bob Wittman

of Glen Mills sold the film rights to his new book,

Priceless: How I Went Undercover to Rescue the World's Stolen Treasures

, four days after it hit the shelves. Inquirer staff writer

John Shiffman

helped him tell the tale. Variety reports that the buyer is

Graham King

, whose resumé brims with projects such as

The Departed

and

The Aviator

. Wittman, 54, seemed blasé about casting. If the main character is, say, a 30-year-old,

Leonardo DiCaprio

would do. Should casting skew older, he'd be fine with

George Clooney

.