Leona Lewis doesn't like the influence Rihanna and Miley Cyrus have on young girls.
Though the 'Bleeding Love' hitmaker doesn't think the two stars are putting on an act with their raunchy behaviour, she gets upset when she sees her young nieces and goddaughter mimicking their dance moves.
She said: "I've met them both and that is them - they're not putting on an act and no one is telling them what to do.
"I have a lot of respect for them, but because I have nieces and I've seen my six-year-old goddaughter doing dance moves that she shouldn't, it does not impress me and I tell her to stop."
Though she loves looking after the children in her life, Leona - who is dating German actor Dennis Jauch - insists she isn't ready for a family of her own yet.
Asked if she feels broody, she told Britain's OK! magazine: "Not at all. My best friend's just told me she's pregnant and I always thought she'd either have a baby really late or not have one, so that's going to be fun and enough for me. I like godmother and auntie duties."
Leona Lewis won't follow in Miley Cyrus' footsteps by twerking.
The 28-year-old singer says her musical style, consisting of big, soaring ballads, doesn't suit the latest dance craze and she won't be seen shaking her rump any time soon.
Leona said: "I feel like my songs don't really suit twerking so it might look weird if I just started suddenly."
Leona shot to fame as a contestant on the UK version of 'The X Factor', on which she was mentored by Simon Cowell, 54, and says she still enjoys a close friendship with the music mogul, who is also her record label boss.
She explained: "He's definitely in my phonebook, I worked closely with him on this record and work closely with him on all of my records."
As one of the richest men in the world with a slew of expensive possessions, including his prized Bugatti car, Simon is notoriously difficult to buy Christmas gifts for.
However, Leona has figured out one item he doesn't own.
She quipped to UK TV show 'Daybreak': "I've not seen him in a Christmas jumper yet, maybe I'll buy him one for Christmas!"