Gwen Stefani loves nothing more than to mix it up in the style stakes - and that goes for her hair too. The star switched up her appearance on Instagram on Thursday with a short curly bob which gave off serious Marilyn Monroe vibes. SEE: Gwen Stefani's edgy kitchen inside $13.2million home is wildGwen shared the close-up image from the cover of her album, This is What the Truth Feels Like, as she reminisced about her tracks. WATCH: Gwen Stefani and Blake Shelton's awkward blind date is epicShe