Eschenbach is associating its three major brands of eyewear with famous personalities in this year's marketing campaign. A Canadian singer, Bryan Adams, has been picked as testimonial for Titanflex. Liz Hurley, former wife of the actor Hugh Grant, will go with Brendel. The two Russian pop singers of the t.A.t.U. duo ? Lena and Yulia ? are endorsing Humphrey's.