Courtesy Kevin Jonas
October 28, 2009 12:15 PM

As Kevin Jonas prepares to head to the altar, his mom, Denise, couldn’t be happier with his choice of a bride. “I really think she is the right girl,” Jonas tells PEOPLE of Danielle Deleasa.

In fact, Denise says she sees so many similarities between herself and Kevin’s fiancée that she teases her son, “You’re marrying your mother – but she is just thinner and prettier.”

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And Denise isn’t the only one in the family who gives the seal of approval to Deleasa, 23. All of the Jonases feel close to her, including youngest brother Frankie, 9.

Denise and Kevin Jonas
Kevin Walker/LFI

“He really loves her and is proud of her,” says Denise, 43. “He already acts like a little brother [to her].”

Tough Adjustment

Still, the mom to megastars admits, it’s been a little hard adjusting to the idea that her eldest son will soon leave the nest. “My role has really changed,” she says, noting that three of her four sons now have driver’s licenses and diplomas.

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But no matter how old her kids get, Denise says, “I’m always their mom.” That’s the message she hopes to share as an ambassador of, a Web site that offers mothers practical advice on how to get involved in their children’s lives.

Message to Other Moms

Having raised some of the best-behaved young men in Hollywood, Denise has found that when she talks, other moms listen. “Since I have this platform,” she says, “I hope I can encourage other moms to find the help and support they need. I would have loved to have an online community like to go to when my kids were little.”

For her, it’s the simple things like having family dinners together that have made a difference as a parent. “Everything I did when [my sons] were younger is really paying off now,” she says.

As for when her son will get hitched, he and Deleasa have not made the date public.

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