Gwen Stefani's current tour has been left without the major sponsor, after they objected to Akon being chosen as the support act.
Verizon's decision to withdraw from the series of dates across North America has "surprised and shocked" the pop star, according to reports.
The telecommunications company have confirmed they took the decision after controversial footage of Akon was posted on the internet.
Last week, a clip of him engaging in a provocative dancing sequence on-stage with a girl, rumoured to be a teenager, emerged. The footage was not shot at a Stefani gig.
Eric Rabe of Verizon, said: "We had already agreed to sponsor the Stefani tour when Akon was brought in and we have kept that situation under review.
"We have now decided to withdraw and the video was part of that decision", he told the BBC.
The next scheduled show on Gwen Stefani's tour is in Florida this evening.
It hits the UK in September, calling at the following venues:
September 2007
20 Glasgow, SECC
22 Manchester, MEN
23 Newcastle, Telewest Arena
25 Birmingham, NIA
26 Cardiff, International Arena
28+29 London, Wembly Arena
October
01 Belfast, Odyssey Arena
02 Dublin, RDS Simmons Court
