The US star is currently expecting her second baby - her first with rocker boyfriend Matt Bellamy - and was recently in the UK to promote her new movie A Little Bit of Heaven.
She said to UK newspaper Sunday Mirror: 'I heard Topshop has a Maternity department - which sounds amazing so I'm going to have to go there! I love clothes and I love to shop while I'm here.
'I'm feeling really well thank you and yes very happy with all that's going on in my life. I'll obviously be spending a lot more time in London now but I'm not sure about moving though - not yet!
'We'll probably split it 50/50 - I do love it here and surprisingly I do love the weather. It's so nice to have seasons.'