See, that's a positive that I got from the campaign, that two women in their fifties could be portrayed as having the same type of fun they had several decades ago.
On the other end of the scale, we accept Carmen Dell'Orifice continuing to model in the same way she did when she was starting out - she hasn't changed much in terms of her visual presentation, even though nobody these days looks as formal as they did in the 1940s and 1950s. In principle, we could equally argue she should have 'moved on' from her younger days, her look is dated etc.
And at some point, the people from the 1960s, 1970s, 1980s, 1990s etc become the establishment, and what they represented in their youth gets carried forward with them, along with our notions of what 'age' should look like.