Completely stumped on 11d. Has to be one of the rhyming pair but I cannot make sense of it. I have only one possible first letter for 20a which suggests to me that the 4th word of 11d is a verb. But what verb?
11 was also my last to parse. It’s not the usual 2 letters for ‘fashionable’ but instead a 3 letter Americanism. I think I’ve heard it in song lyrics (one in particular comes to mind). Then 4 letters for ‘following’ and 1,4 for ‘some trend’.
Thanks Jono. Like Yevrah I was stuck on 11d, I now have the answer but if I understand its parsing the "some trend" is a bit weak. And I thought that the American word had a slightly different meaning, But got there in the end with your help.