Bringing the Sona build topic over here because we don't want to derail the Screenshot thread. (how many times have we had this conversation anyway?)
I'd like to tweak that build a bit because it's leaving out a few essential things for a support honestly, especially Sona. Some of them are good, some a little less.
FQC (Great for gold generation, gives a bit more power to your poke, and has one of the most powerful actives in the game currently).
Sightstone (With the removal of stealth wards, sightstones are incredibly vital and are a must-buy on any support, additionally, the ruby sightstone upgrade is great for lowering the cooldowns of your active items. By having sightstone, you also can switch your trinket to a sweeping lens to have further control over vision on the map)
Mobi Boots (Only other type of boot you might want is Lucidity Boots, but you're going to reach your CDR cap by full build anyway. Excellent choice if you plan on roaming.)
Zeke's (Excellent item if your ADC is auto-attack reliant or if you have a mage on your team that's already strong. Sona's already frequently casting a lot of spells, so the passive should stack up fairly quickly, and the damage spike received from it is excellent if timed correctly. Also gives her a bit of armor and AP for her scalings while still packing the necessary utility for a support item.
Mikael's (Gives excellent mana regen, can save your ADC from some sticky situations with the active, and also can be used as a heal in close duels and teamfights.)
Locket (Interchangeable with Banner. Locket is a good item for its magic resist given to allies as well as the shield capable of covering the entire team, which is incredibly useful in explosive teamfights to soak up some damage.)
Banner (In my opinion, this item should only be used if you feel that sidewave control could be the key to winning the game. This item also has the magic resist aura that locket has, but instead allows you to upgrade a minion, which, if left alone, can push incredibly well.)
This would normally be my final build in a sona game. Frozen Heart is really only necessary if the enemy team has a lot of attack speed-reliant champions, and Iceborn isn't really that necessary if you can make use of Sona's E power chord.