Congratulatory messages have been flooding in for newly engaged couple Ashlee Simpson and Pete Wentz from her older sister Jessica, father Joe and ex-boyfriend Ryan Cabrera.

Jessica, who rose to fame in reality TV show Newlyweds, suffered a painful divorce from ex-husband Nick Lachey, but is ecstatic about her sister’s impending nuptials.

She says: "My sister is overflowing with joy. Pete is an incredible soul. They naturally bring out the best in each other. I couldn't be happier."

Father Joe is also proud of his little girl’s choice of partner, praising the Fall Out Boy bassist for asking his permission first.

He tells People: "(Pete) did ask me. I told him that I would be honoured to have him as part of my family."

And Ashlee’s ex-boyfriend Ryan Cabrera is also happy for the pair.  He tells Us magazine: "I like him a lot - I think they're really good together.

"I met him a couple times, and he was really nice and intelligent, so I was like, 'Very cool, go for it!'"

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