Sarah Ferguson and Prince Andrew have joined forces for their daughter Princess Eugenie's royal wedding.

The Duke and Duchess of York have remained friends following their divorce so it's not surprising to see them working together for their youngest child's special day. A source claimed that Prince Andrew and Ferguson are strongly involved especially in organizing the evening reception.

"Sarah and Andrew are helping to organise the evening party," a source told Vanity Fair (via Express). "The plan is for a marquee to be set up in the grounds and dancing late into the night."

"Sarah is being very hands-on, but in a great way, and Eugenie wants her mum to be a big part of it all and will make sure Sarah is included in every aspect," the insider added. "Sarah is bringing a very eclectic and exciting guest list to Windsor."

Another source told People that Ferguson is "very involved" in the wedding preparation. Although "it is very much Princess Eugenie and Jack's day, and they are leading the planning, Fergie is very involved," a palace source said.

Former royal butler Grant Harrold was expecting Ferguson to do the job. "I am sure that as with all mothers of the bride, Sarah Duchess of York will be assisting her daughter with all aspects of the wedding especially when it comes to picking the wedding dress," he said.

Princess Eugenie's royal wedding is just in time for Ferguson. According to a handwriting expert, the duchess needs something to keep her busy.

"Sarah needs an emotional high and something to get her teeth into," graphology expert Tracey Russell said. "She enjoys keeping busy with lots of interests and getting involved with everything that's going on."

"She still often finds herself rushing around like a dizzy chicken getting distracted and wishing there were more hours in the day," Trussell added. "She's still a delightfully warm, compassionate, upbeat social butterfly, spirited and stimulating company, a people's person. But she's calmed down and much more comfortable in her own skin."

Ferguson will be making her royal comeback in the upcoming event. However, according to royal biographer Katie Nicholl, her presence at Princess Eugenie's royal wedding may be uncomfortable for Prince Philip as the latter "will be forced to put on his best poker face."