'So Disappointing': Angry Fans Accuse Rihanna Of Lip-Synching And Being 'High' During Singapore Concert

Rihanna is on tour once more after a nearly seven-week summer break, and audiences haven't exactly welcomed her back with open arms. After a performance at the F1 Grand Prix in Singapore on Sunday night, the singer's fans took to Twitter to blast her for being 'disappointing,' 'high on weed,' and even 'lip-synching' during the show.

"Rihanna is lip-synching. From the Ex-soundman next to me," @st_evel_ai tweeted. "Plus, right light isn't on, on her mic."

Other fans were similarly underwhelmed, even going so far as to accuse her of being drunk and high:

But at least one person enjoyed the show: Justin Bieber, in town for his own concert on Monday night, Tweeted, "Watched my girl @rihanna kill it last night in Singapore …"