Prego JESSICA SIMPSON begs estranged gay dad JOE to walk her down the aisle before it’s too late!

MORE than two years after getting engaged, pregnant Jessica Simpson has finally caught the wedding bug!

The “Fashion Star” beauty was so deeply moved by the Dec. 15 nuptials of her best friend CaCee Cobb and “Scrubs” star Donald Faison that she’s telling pals she’s going to race ahead with her wedding to Eric Johnson, 33.

Jessica, 32, and the ex-NFL player got en­gaged in November 2010, and the singer/ actress delivered their first child, daughter Maxwell, in May. She’s due to have her second baby this summer, but she wants to tie the knot first – just weeks from now.

“CaCee and Don­ald’s wedding blew Jess away,” revealed a source. “She was so touched by their deep abiding love, she’s decided to fast-track her own ceremony.

“She told guests at CaCee’s wed­ding, ‘This is the last time you’ll see me as a bridesmaid. The next wedding I’m at, I’ll be the bride!’

“Jess and Eric are planning to marry in January or February and are debating between a wedding in Hawaii or just putting on a down-home casual affair at their Beverly Hills home.”

Amazingly, Cacee’s joyous occasion at the Hollywood home of Donald’s co-star, Zach Braff, soft­ened Jessica’s anger at estranged father Joe Simpson. As The ENQUIRER exclusively reported in early November, Joe’s wife Tina pulled the plug on their 34-year marriage after the former youth minister admitted to being gay.

Happily, Jessica and Joe were photographed enjoying a touching reunion at CaCee’s wedding.

Disclosed the insider: “Jess even asked her dad to walk her down the aisle at her wedding.”