Last night saw the next event on the glittery awards cavalcade. The Screen Actors Guild awards are less formal than the Globes or the Oscars so many stars opt for a slightly less showy look. This year there were some truly stunning looks on show, and some key trends, including 70s glamour, black is back and ponytails. There were also splashes of block colour, with red, blue and green all looking great on the Red Carpet. Trends 70s chic Angela Jolie wore one of the key trends on the night – 70s disco. She wore a stunning fluid black gown from Jenny Packham. The dress, with low back and draped…