Gavin Rossdale Out with the Nanny ... But Not THAT One

Gavin Rossdale has reset the nanny button ... the former Gwen Stefani look-alike nanny who tabloids linked to him is gone, ain't the one he's out in public with any more.

Gavin, the nanny, and one-year-old Apollo strolled the streets of Brentwood Tuesday ... and the nanny looks all business. We're told she's been with the family since Apollo's birth.

Our sources say Gavin and Gwen will share joint custody of the kids and that includes all child-rearing decisions ... including the selection of nannies.