Bobbi Kristina Brown wants to start a family ''as soon as possible''.

The aspiring actress - the daughter of Bobby Brown and his late ex-wife Whitney Houston - married Nick Gordon, who was raised by the 'I Will Always Love You' hitmaker from the age of 12, earlier this month and her family are said to be unhappy with their future plans.

A source told Grazia magazine: ''They want to have a baby as soon as possible. After a tough few years, Bobbi wants a happy ending. But her grandmother is beside herself with worry.''

Bobbi's grandmother, Whitney's mother Cissy, is said to find their relationship ''odd'' and thinks the young couple - who got engaged in 2012 - have married too quickly.

The source added: ''It's not that Cissy dislikes Nick, but she thinks Bobbi has rushed into things and finds it odd because she still sees Nick as Bobbi's brother.''

Bobbi, 20, and Nick, 24, previously claimed that they got Cissy's approval before exchanging vows and she was ''very happy'' for them.

Nick added: ''We saw her at our cousin's sweet sixteen and she gave us her blessing.''