The couple, who are parents to daughter Alaia-Mai, were snapped on the red carpet as they arrived at the event to present an award.
Saturdays singer Rochelle was wearing a striking monochrome dress, featuring a black strapless bodice and floor-length white skirt, and she kept her long hair sleek and straight.
Marvin, who found fame with JLS, meanwhile looked seriously dapper in a black tuxedo as he posed for pictures with his wife.
The couple, who married in 2012, presented the award for Soap and Continuing Drama - which was won by the Coronation Street production team - but it was soon back to reality.
After the showbiz event, held at the Theatre Royal in London, Rochelle tweeted: "Back home to a teething Lai... She cut another tooth day..feel so sorry for her when she is teething. She'll have a full set soon #calpol x."
Back home to a teething Lai... She cut another tooth day..feel so sorry for her when she is teething. She'll have a full set soon #calpol x— Rochelle Humes (@RochelleTheSats) May 18, 2014
This morning, she added: "Got a shoot today so I have a face mask on...Alaia thinks I'm an alien and doesn't want to come near me I knew I looked bad but jeez."
Check out our BAFTA red carpet gallery here:
Copyright: WENN Daniel Deme