updated 10/02/2012 AT 12:00 PM ET
•originally published 10/02/2012 AT 1:05 PM ET
Look who’s already butting heads!
Adoring dad Warren shared the photo on Twitter, showing off his growing baby, who’s just about the same size as Sid.
The Alba-Warrens also have a 6-year-old American bull dog rescue named Bowie (named after David Bowie; Sid is a nod to Sid Vicious). The cheerful pooch kept Alba company when she was pregnant with Haven. The actress took daily morning walks with Bowie through the L.A. hills.
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