Rav Moshe Feinstein zt”l said, “…..there are some people who say that it’s okay to shake hands if the hand was extended to you first, reasoning that it’s not b’derech chiba; for practical purposes, however, it’s hard to rely on this.”
Rav Ovadiah Yosef had a very embarrassing story, in which his responsa sefer, Yabi’a Omer, won a government prize. Golda Meir, in front of thousands of live spectators, and broadcast on TV’s all over the country, offered her hand. He simply shook his head.
Ask your rav for his opinion.