Jessica Simpson will reportedly walk down the aisle in a pale pink wedding dress.

The 33-year-old star is set to marry fiancé Eric Johnson in Santa Barbara, California early next month and has decided to wear a custom-made Marchesa gown with a modern twist.

A source told In Touch magazine that it took Jessica more than a year to decide on the dress.

A spokesperson for the designer hinted the speculation is true, but told E! News: ''We are unable to comment on this matter at this time.''

Earlier this year, Jessica said: ''I already know the silhouette that I want.''

Meanwhile, the couple, who have a two-year-old daughter, Maxwell, and a 12-month-old son, Ace, together are planning to treat their guests to a huge barbecue spread at their lavish reception.

A source previously revealed that Jessica, who was previously married to Nick Lachey, and Eric have booked the 78-acre Bacara Resort & Spa in the beach-side town for their nuptials, but the blonde beauty is still undecided as to whether she actually wants to get married there.

An insider recently said: ''They've booked it for now. But Jess keeps going back and forth on locales.''

The bride's sister Ashlee Simpson has said she is thrilled with the bridesmaid dress she will wear on the big day.

She said: ''My dress is really beautiful! It's really, really stunning.''