Paris Hilton believes she and Kim Kardashian West share the same work ethic and that's why they've both been successful.

The 34-year-old star and Kim used to party together a lot and are still friends, and Paris recognises many of the traits she has in her pal - who she has known since childhood.

She said: ''Kim Kardashian always had a great work ethic like me.

I'm very determined in life. Being successful really fulfils me.

''I work hard. I'm a good person with a good heart. That's why I've been in this business for so long, and that's why my product lines do so well.''

Although Paris comes from a very wealthy family - her great-grandfather Conrad Hilton was the creator of the Hilton hotel chain - the blonde beauty insists she has built her own multi-faceted business from scratch without the help of her relatives.

Paris - who launched her 18th perfume, Paris Hilton Limited Edition, in Liverpool, North East England, on Wednesday (13.05.15) - told the Liverpool Echo newspaper: ''I've worked hard for everything. We weren't spoilt as kids. My parents really instilled in us that you need to be independent. Some people think I'm just a trust fund kid, but I've worked hard for everything. I'm not a dumb blonde - I wouldn't have got this far if I was.''

Among Paris' business interests are her line of signature scents, her clothing line and book range, while she is also one of the world's most sought-after DJs.