Sentence:  The singer, who missed Jingle Ball because of bad weather in the Big Apple, invited thousands of <WSD>Smilers</WSD> — the not-so-clever nickname given to her adoring acolytes — to attend the afternoon soundcheck before her sold-out show at TD Garden. 
Meaning of the word marked with <WSD> tags:  A fan of American singer and actress (Miley Cyrus).