Pi bonds and hybridization

[Sophia Fox 4B]

Can pi bonds be hybridized? Since they're in a different plane than the sigma bonds I'm not sure. Also, are all sigma bonds hybridized?

[Samantha Kwock 1D]

All sigma bonds are hybridized as sigma bonds are defined as single bonds between two atoms created by the hybridization of their orbitals. In order for a sigma bond to be formed, hybrid orbitals must be created. Pi bonds are not hybridized as they are composed of the overlap between two atoms' p orbitals, which are unhybridized orbitals.

[Anusha 1H]

I think a good example for this idea is ethane, C2H4, because both of the carbon atoms in the molecule are sp2 hybridized and they will each have one unpaired electron in the p orbital. So this parallel overlap of the p-orbitals will be unhybridized.