Gwen Stefani finds performing her old songs ''upsetting''.
The 'Just a Girl' singer - who is dating Blake Shelton and has sons Kingston, 12, Zuma, nine, and four-year-old Apollo with ex-husband Gavin Rossdale - is preparing for her 25-date Las Vegas residency and she's feeling ''very anxious'' about being taken back to bad times in her life through her own back catalogue.
She said: ''When I'm in the music, the music takes me right back to those moments in my life. And some of those moments are sickening, you know what I mean? Certain memories are upsetting. That's why I say this is not just a show for me, it's my life. It's real for me and I think that's why I'm very anxious about it.''
But the 48-year-old singer thinks the Vegas shows are perfect for her as she's reaching the ''end of [her] journey as a musician.
She told Closer magazine: ''I'm obviously at the end of my journey of being a musician... It's perfect for me to be able to do a Las Vegas show. It just feels like the perfect next chapter for me.''
And Gwen is always happy to share her music with the world.
She said: ''I love my music, I love the attention and I love being able to share that love with people and get that exchange. It's my gift, it's what I'm here for.''
She said: ''I've always looked up to Jennifer.
''Her show was incredible and she works so hard. I admire her a lot.
''She was breathtaking on stage, but when you see her up close, it's like, 'What?! It's not possible. You are so gorgeous!' ''