To the question who is bigger in Europe ->
IFPI Awards sales across Europe:
Rihanna:
RIHANNA LOUD 3x Platinum for sales of 3 million across Europe.
RIHANNA GOOD GIRL GONE BAD 3x Platinum for sales of 3 million across Europe.
RIHANNA RATED R 1x Platinum for sales of 1 million across Europe.
RIHANNA TALK THAT TALK 1x Platinum for sales of 1 million across Europe.
RIHANNA A GIRL LIKE ME 1x Platinum for sales of 1 million across Europe.
(Though this states are from 2007-2011. So more current than Shakira... So i guess RiRi is much bigger than Shakria RIGHT NOW and since 2007 than Shakira in Europe.)
Shakria:
SHAKIRA FIJACION ORAL VOL 1 1x Platinum for sales of 1 million across Europe.
SHAKIRA ORAL FIXATION VOL 2 1x Platinum for sales of 1 million across Europe.
SHAKIRA LAUNDRY SERVICE 4x Platinum for sales of 4 million across Europe.
Source:
http://www.ifpi.org/content/section_...pi_awards.html
PS: And please don't act like a hit single makes you the European Queen. Waka Waka was a UTTER SMASH in Europe, but don't forget that RiRi has We Found Love, Only Girl, S&M, Umbrella, Don't Stop The Music which all were HUGE successes around Europe. Also Unfaithful...