As the British royals welcomed their Qatari counterparts, all eyes were on Princess Catherine—but it wasn't just her impeccable style that had fans talking. Princess Catherine sparked concern among royal fans during the Qatar state visit.

She's officially back! The royal glamour quotient was in full force as Princess Catherine appeared in London for her first state visit since completing cancer treatment.

Catherine, Princess of Wales has helped the British royal family roll out the red carpet for the Emir of Qatar on the first day of his state visit to the United Kingdom on Tuesday.