Meghan Markle has chosen a designer for her wedding dress. And it is no surprise that her BFF Jessica Mulroney was there to guide her during her first fitting!

"We have a wedding dress designer," royal biographer Omid Scobie told ABC News. "Meghan flew in her close friend and bridal stylist Jessica Mulroney from Toronto to London last weekend where she attended a top-secret fitting at Kensington Palace with the designer. They've tried on a number of different designs and are currently whittling it down to pick the best design for the day."

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Scobie added that Markle will likely choose "something simple and classy and very elegant." But she will also get plenty of input from Mulroney, who has a lot of experience with wedding planning.

According to People, Mulroney is a consultant for the Canadian outpost of Kleinfeld's of Say Yes to the Dress fame. She even helped pick out Markle's fictional wedding dress for Suits. Mulroney additionally works as a contributing editor for Wedding Vacations magazine.

Jessica Mulroney 1 Meghan Markle's stylist likes to pair preppy classics (like this striped turtleneck) with sexy showstoppers (like the leather mini).

Mulroney is not just helping Markle pick out a dress, though. "Jessica Mulroney has a rich history when it comes to ... wedding planning and bridal styling," Scobie added. "It's not just the dress she's involved in. She's actually helping with a number of elements for the big day and I think Meghan is really relying heavily on her expertise and a lot of the decision she has to make, and there are many."

A source similarly told E! News, "Alongside dress planning, Jessica is guiding Meghan through a number of wedding day details, helping pull together ideas and resources from her impressive contacts book."

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Mulroney and Markle first grew close when Markle was living and working in Toronto while filming Suits. Mulroney is the wife of Ben Mulroney, the son of a former Canadian Prime Minister. And ever since they met, Mulroney has been shaping Markle's look.

Mulroney's personal style is a mix of classic staples and sexy silhouettes. And she has given Markle a similar makeover. Markle's tousled buns, trendy coats and monochromatic styles may be more understated than Mulroney's. But the influence is clear.

Jessica Mulroney 2 Va-va-voom! Jessica Mulroney isn't afraid of showing off her never-ending curves.

Mulroney reportedly picked out the coat and skirt Markle wore for her first royal outing, and the outfit she wore when announcing her engagement. Mulroney introduced Markle to Birks, whose jewelry she wore in the engagement photo.

And Mulroney understands what outfits are appropriate for a public official. She has dressed Sophie Gregoire Trudeau, the current first lady of Canada!

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So it's no wonder Markle is keeping Mulroney at her side during the wedding planning process. Mulroney's daughter, Isabel, will even have a role in the ceremony.

What style would you like to see Meghan Markle wear on her wedding day? Let us know your take in the comments section below!