Katy Perry is opening up about why she doesn't have a full-time nanny. The 37-year-old singer appeared on the podcast with Jason Bateman, Sean Hayes and Will Arnett and explained that not having one allows her to be in full-time «mom mode.»The «Roar» singer — who shares 2-year-old daughter, Daisy Dove, with Orlando Bloom -- joked about having to move the interview along quickly because she was in «mom mode» before diving into how even her immense workload won't convince her to hire a full-time nanny.«I am working a lot, and I've always worked a lot,» she explained.