Narrowing it down to 4 was colossally hard, despite me being a 1996 boy, the 90's is easily my favourite era, the super sexy cars being one of many reasons why.
1996 Williams FW18
While the FW19 may be my favourite F1 car of all time, the cluster of sponsors on the nose hurt what was otherwise, a perfect livery. As such, its predecessor for me is the best looking Rothmans Williams.
1990 Ferrari 641
Scarlet Red? Yes. Low nose? Yes. Black wings? Yes. Big #1 for the world to see? Yes. Does it get any better? No.
1997 Jordan 197 (Hockenheim & Monza aero)
Probably my most driven car on F-1 World Grand Prix (N64) as a kid, the striking yellow, snake art on the nose, red TOTAL detail on the top, it had serious character! Something sorely missing from liveries these days. The car that made me fall in love with F1.
1998 Williams FW20
A livery heavily criticised back when it was launched, history has been kind to it. Only Frank Williams would dare paint his cars red to annoy Ferrari. The nose sponsors work so much better on this car than the FW19, I just wish I could have seen this livery on a 1997 spec car without the ghastly grooved tyres.