(Cover) - EN Showbiz - Jessica Simpson has not got a dress for her upcoming wedding yet but insists it will be "amazing".

The 31-year-old bride-to-be opened up to Extra TV, saying she has not got her special gown yet and is more focused currently on her new reality show Fashion Star. She became engaged to American footballer Eric Johnson last year after six months of dating.

Jessica is looking forward to her big day and wants it to be a fun time.

"I don't have a dress yet," Jessica said. "The dress is going to be amazing. With a wedding, it should be a celebration like we should all be having fun, every single person there."

But the singer-turned-fashion-designer was coy about the actual wedding date and did not give any indication how soon she will be taking her second trip down the aisle.

"I've heard people throw around dates and not one of them has nailed it. Not even close," she laughed.

Jessica is set to star as a mentor on the new fashion based show that puts aspiring designers through their paces in a bid to win a multi-million dollar contract to launch their own fashion label.

Her ex-husband Nick Lachey married his new wife Vanessa Minnillo on Necker Island earlier this month. (C) Cover Media