I'm no designer, but for example let's look at what we have in front of us.
For starters, every single colour of the outfit is too bright, which means it's going to be an unpleasant sight seeing 50 people clumped up together and it's going to burn the eyes of the attendees.
So if we're sticking to the suits for men, I would immediately go for a darker shade of green for example they could have went for oak green (national tree of Lithuania), set the shorts on fire and keep pants for all of the men, unified white sneakers for the team.
As for the women, well, the cut of the dress is absolutely horrible and kills all of the features so either change the cut of the dress or scrap the dress entirely. Oooor, we could even drop the weird fetish of always covering up the men entirely whilst leaving women's legs exposed and actually go for a more sporty-type clothing for the women.
Let's say we get bridges with a type of blouse with a bomber jacket, oor see-through/netted clothing is pretty popular right now, so we could make the bottom layer (skirt+ shirt/crop top) let's say yellow or red with a thin, light see through dress that's perhaps white to match the dress shirts of the men or could be light black and the vibrant colours underneath would peak through without being too bright.
It's extremely difficult to find decent pictures, but yeah, imagine it slightly less revealing with a yellow top, red skirt, or you can even play around with the green that the men are wearing.