Well, sporty is good. Athletic too but we don't always use them when it comes to just looks. Athletic is used for body shape sometimes but normally it is used for a really toned person like a track and field star or a swimmer. Not a baseball player! For sure most soccer players are athletic. Slim is tough. It's all about connotation or the suggesting of a meaning of a word beyond what it literally says. For example, the word "snake" literally one of those small creatures which lives on the ground and is shaped like a garden hose. However, snake can indicate something "evil" or dangerous. And connotation can be on a personal or a public scale. Say for example, a name. While for most people a name like, I don't know, Victoria, may be pleasant enough. They may not know anyone with that name. The name may suggest "Royalty" from the former Queen of England(in the US) or for victory for those with a knowledge of Latin and it may suggest something or someone else to people like me. Connotation is often a meaning or suggestion from a cultural thing. While the word "Whitewater"(shudders), may suggest to some people the idea of being on a raft or canoe down a river with the whitewater. But it may also remind them(often connotations get their meanings or comprehension because people remember), the financial scandal involving Bill and Hillary Clinton. Same thing with the various scandals since Watergate(just the name of a rather large hotel in Washington) that have happened since that have been called a name which ends with the suffix -gate. Monicagate, Travelgate, Iraqgate, Gardengate, Frontgate, BillGate and so on and so forth. But I go digress...
Slim is usually used for people closer to the shape of any number of Hollywood starlets, Julia Roberts, Cameron Diaz, or Charlize Theron. But the problem is that the next words on the scale(oooo, double meaning) are words like "Chubby" or "plump" which have a negative connotation or in reality, just are negative meanings. In fact, we used to say in English, and some still do, "pleasingly plump" for women, not really men, who have a good number of pounds or kilograms on them but who are still gorgeous. It may be the face or their nice personality adds to their charm. Or they just may be "Big boned" like we say here. Yes, I do have a love of words. It's all Greek to me! Anyway for now, I will just say once again that "perfect" is the best adjective I can think of to describe Victoria.