Gwyneth Paltrow claims her Web site, Goop, pulls in 150,000 subscribers — but the leggy celebrity isn’t getting all those readers on her own. It turns out that Goop.com is a client of advertising guru Peter Arnell. Arnell, which has repped Chrysler, DKNY and Con Ed, is likely “handling all branding, logos and layout of [Paltrow’s] Web site, as well as her e-newsletter mailing,” an insider said.  

However, Arnell’s reputation as a hard-charging ad man, is a stark contrast to the Zen-like lifestyle Paltrow preaches. On Wednesday night, the health nut chatted with Christy Turlington and Donna Karan (who showed up with her new, unidentified 25-year-old boyfriend) at the Bent on Learning charity event, hosted by alice + olivia fashionista Stacey Bendet. Paltrow, who’s opening a chic yoga studio in Greenwich Village, was there to support yoga programs in the city’s underserved public schools.

One guest overheard Paltrow say, “I don’t want to be the next Martha Stewart, I just want to share advice. Goop has 150,000 subscribers now.”

The snitch added, “Gwyneth was so happy and being friendly to everyone. She said that she and [husband] Chris Martin both love to do yoga, and that she missed the Oscars because her son, Moses, was sick.”