The 37-year-old reportedly started shouting and throwing tantrums at the All Saints store here.
"She was screaming. She had to be escorted out by security. She seemed drunk," a source told a popular daily.
However, Reid's spokesperson has another story to tell, reports thesun.co.uk.
"Tara gets a huge discount with All Saints in Britain and Paris because s'e's a walking billboard for them. She gets photographed... so they give her huge hook-ups. We told them we get a discount, and they said th'y'd email the press team," Reid's spokesperson said.
"She was definitely not drunk. People love to say Ta'a's hammered and this and...whoever is saying that is not on Team Tara," added the spokesperson.