Gavin Rossdale sunglasses hiking denim gwen stefani Gavin Rossdale sunglasses hiking denim gwen stefani

Whew ... good thing this sexy lady is just Gwen Stefani and Gavin Rossdale's nanny!

The rock star daddy took boys Kingston and Zuma hiking in the Hollywood Hills without the No Doubt singer. Gwen's been busy playing shows to promote the band's latest album Push and Shove.

Looks like Kingston is lovin' all the attention!