The 18-year-old One Direction singer - who briefly dated TV presenter Caroline Flack, who is 15 years his senior - has listed his favourite older ladies as Angelina Jolie, 36, Kate Moss, 38, and Kate Winslet, 36.
Although he doesn't seem to be as keen on female pop singers, adding: "Sorry - it's a no on Madonna and Kylie Minogue."
The boy band heartthrob also said he likes the girls he dates to wear sexy lingerie, telling The Sun newspaper: "I like my girlfriends to wear black lingerie ... definitely."
Harry has been called the most flirty of One Direction - which also includes Niall Horan, Zayn Malik, Liam Payne and Louis Tomlinson - but he never uses chat up lines on girls.
He added: "I'm not really a pick-up line guy. I don't know what I do."
Harry was rumoured to be dating American Victoria's Secrets model Emma Ostilly after he was pictured kissing her in New Zealand after a night out, but he quickly denied any romance, saying she was just his friend after starring in the video to One Direction's 'Gotta Be You'.