Gwyneth Paltrow took a break from tending to her children's school runs to attend a private viewing of the Frieze Art Fair in London this morning. The same event brought out Sienna Miller last year, but she's off in NYC prepping for the official opening of her Broadway show. Gwyneth was joined instead by Stella McCartney and Lily Allen, who was able to avoid an awkward run-in with her Summer Read more