Complex sentence: It had been reported in a Chinese newspaper in Singapore that Stefanie had secretly registered her marriage with her boyfriend of 5 years on 31 March 2011 which made her appearing as showbiz headline for 3 consecutive days from 12-14 April 2011.
Split into simpler sentences: It had been reported in a Chinese newspaper in Singapore that Stefanie had secretly registered her marriage with her boyfriend of 5 years on 31 March 2011. This made her appearing as showbiz headline for 3 consecutive days from 12-14 April 2011.