Falkland Islands (Islas Malvinas) is about 6 times smaller than Serbia.

Serbia is approximately 77,474 sq km, while Falkland Islands (Islas Malvinas) is approximately 12,173 sq km, making Falkland Islands (Islas Malvinas) 15.71% the size of Serbia. Meanwhile, the population of Serbia is ~6.7 million people (6.7 million fewer people live in Falkland Islands (Islas Malvinas)).
Tip: This to-scale comparison of Serbia vs. Falkland Islands (Islas Malvinas) uses the Mercator projection, which distorts the size of regions near the poles.