Shepard proposed to the Heroes actress over the festive period (09) after two years of dating.
But fans expecting to see snaps of the happy couple on their big day will be left disappointed - Bell is adamant the nuptials will be for close friends and family's eyes only.
She says, "(We) keep a very low profile. We're all the more private because people are interested and we really don't think they should be.
"We're not interested in making a spectacle out of something we think is lovely. We're both very much homebodies. It's not like we're sitting at home but wishing we could be out at a club without people noticing us."