Pop beauty Katy Perry knows she has to be "happy being alone" before she embarks on another serious relationship.

The songstress married Russell Brand in October 2010 before splitting at the end of 2011.

Perry has since enjoyed an on/off romance with John Mayer, but insists she's happy being single at the moment.

Speaking to US Vogue she explained: ''I'm not in a relationship, I'm just on my own - I am myself in my own bed. I have to be happy being alone, and I am happy. I believe that I will be loved again, in the right way. I know I'm worth it.''

Perry hopes to find the right person for her in the future.

She added: ''I hope I don't have to live as a widow, an emotional widow ... No, I don't believe that. But I think that I can just right now focus on me and focus on strengthening myself and my emotional support system.''

Perry also revealed in the interview that she noticed her former husband Russell Brand changing while they were together and revealed: "Let's just say I haven't heard from him since he texted me saying he was divorcing me December 31, 2011."