Gwen Stefani strutted into an LA nail salon yesterday ready to get her polish changed. She arrived in tall stilettos and skinny jeans, but over the weekend she dressed down to take her boys, Zuma and Kingston, to the zoo. The No Doubt songstress also got glammed up for Elle magazine's May issue. Aside from tending to her fingers, Gwen has been busy lately spending time in the studio smoothing out lyrics and tweaking melodies for her band's upcoming album. The guys in the group jokingly tweeted about the effects of their juice cleanse, but Gwen seems to prefer spending her downtime indulging in online shopping. Fans of Gwen can get in on the e-fun by bidding on personal items she donated to an auction benefiting the children of Japan. There's also the chance to join Gwen at a private Harajuku-themed tea party she's hosting in June — the auction continues until April 25 so place your bids now for her charitable cause!