Kate Middleton is reportedly hunting for prospective grooms for her sister, Pippa Middleton. Apparently, Kate feels that it is time her sister settled down. The Duchess is reportedly inviting prospective single men to her husband William's birthday bash.

William turns 30 on 21 June and Kate is planning a big surprise party for her husband.

"Kate thinks that if Pippa focuses on a new romance it'll calm her down. So she's planning on playing Cupid by inviting a number of her single male friends to Wills' birthday bash,'' a source told Now magazine.

Pippa has been single since her break-up with Alex Loudon in November 2011. Since then she has been linked to many including George Percy and even Prince Harry.

Apparently, Kate's relationship with her sister has not been very good recently.

"Relations between the sisters are fairly fractured in comparison to how they used to be. Kate thinks that if Pippa focuses on a new romance it'll calm her down. So she's planning on playing cupid by inviting a number of her single male friends to Wills' birthday bash," a source told the magazine.

Pippa is also trying to change her career path. Pippa who recently quit the catering industry was doing party planning. Now she intends to expand it by doing wedding planning since the industry is quite lucrative and fast expanding.

"She is keen to move into party planning for society wedding receptions - it would be perfect for her," claims one source.

Even though she is hunting a groom for her sister, Kate is not falling short of party ideas to make husband William happy.

"Kate really wants to make Will's birthday one to remember and she's pulling out all the stops. She's been secretly organising a big party with the help of her mum Carole and her sister Pippa. Kate loves cooking for Wills whenever she gets the chance so she wants to make a roast dinner for 25 of his closest friends. After dinner, she wants to kick off the party with a murder mystery game, which she knows he'll enjoy. Although there'll be a fair few of his friends attending, it'll still be a romantic evening for them as he'll know that this is her way of showing him how much she loves him. He'll really appreciate all the effort she's put in," a source told Now magazine.

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Pippa Middleton ranks at 11th spot in FHM's sexiest women's list of this year. ImageReuters