This brings tears to my eyes everytime I watch it. So beautiful in its simplicity.
What a talent. Like a critic posted, she just radiates such star quality that you're willing to forgive any flaws. Plus, she seems so down to earth and sweet.
Twiggy's chief talent seems to be her likeability. She was a marvelous, iconoclastic fashion model, but she only did that for 4 years.
She can act, dance, and sing a little, but doesn't really excel at any of them. Tommy Tune was, for a while, obsessed with her (when they were "dating" and co-starred on Broadway with her). Tyra Banks fired her from ANTM (that's a credit to her character). Outside of THE BOYFRIEND, she's chiefly famous for playing herself, as she did so well on AB FAB guest spots.
You rarely hear people say a bad thing about her. She's been married to Leigh Lawson for 24 years. And looks pretty good for 63.
R3 is correct, she's one of the most likeable personalities in the public sphere. Whether appearing as herself, or trying to act, it's impossible to dislike her.
Of course one generally responds to her acting with "Oh, look at that sweet girl trying to act", but that works for ingenue roles.