The 52-year-old wore a bright red abaya and matching hijab when she appeared on "The Late Late Show" in Dublin on Friday night, reports "thesun.co.uk".
Earlier in the day, she arrived at the studio with her son, 15-year-old Shane Lunny, who looks exactly like his mom.
Sinead was dressed more casually in blue trousers, a matching belted shirt, and a navy cardigan. She complete the look with a dark blue headscarf. Shane carried his mother's red abaya to the venue.
Shane apart, Sinead is also mother to 32-year-old Jake, 23-year-old Roisin and 12-year-old Yeshua.
In October last year, Sinead announced that she had converted to Islam, changing her name to Shuhada Davitt.