Singer Rihanna finds a unique warmth and "safeness" in Jennifer Lopez's voice -- the kind her mother has.

The two singers have voiced the mother and daughter Lucy and Tip in animated movie "Home", which follows the 12-year-old's search for her parent after they are separated following an alien invasion.

Rihanna says Lopez shares a lot of characteristics with her own mother.

"I love her. She is great. Doesn't everybody want JLo to be their mum? When you hear Jennifer, her voice has that warmth and safeness that my mother's has. It has that tone. It's almost like it can hug you," Rihanna said.

"My own mother is so loving and caring. She just makes you feel safe," she added.

Rihanna, 27, relates a lot to her young character in the movie because she is both shy and sensitive.

"Tip is vibrant, she's very strong, very independent and very sassy, but she's also very sensitive and those are all things I identify with - characteristics that drew her to me. I was always sassy, I was like that at six years old, four years old.

"But I was also shy. It's strange. I'm a very shy person, even to this day," she told Grazia magazine.