Did Rihanna pull a Justin Bieber?

The singer was over two hours late to her concert in Wales last night after allegedly partying until 4:30 a.m. that morning. Talk about deja vu. The "Diamonds" singer was also late to two concerts in Antwerp, Belgium last week.

After performing in Paris the previous night, the songstress reportedly went to the VIP Room nightclub then dined at the on-site Gioia Italian restaurant. She later danced the night away and got a standing ovation from club-goers partying below her private balcony.

Her concert at the Millennium Stadium in Cardiff, Wales started almost exactly 12 hours later at 8 p.m. She took the stage after 10 p.m. and fans took to Twitter to complain about her performance, accusing her of lip-synching.

Let's home RiRi redeems herself tomorrow in Manchester.