20 naTabhairavi janya
Aa: S R2 G2 M1 P D2 N2 S
Av: S N2 D1 P M1 G2 R2 S

taaLam: aadi
Composer: Arunaacala Kavi
Language: Tamil

pallavi

yArO ivar yArO enna pErO ariyEnE
(yArO)

anupallavi

kArulAvum shIrulAvum mithilaiyil kannimADam tannil munnE ninravar
(yArO)

caraNam

candra bimba mukha malarAlE ennai tAnE pArkkirAr orukkAlE
anda nALil tondam pOlE urugirAr inda nALil vandu sEvai tarugirAr
(yArO)

Meaning:
Who is this? What is her name? I don't know.

Full meaning here at Chennai Online.

Other information:
Lyrics contributed by Lakshman Ragde.

Contrary to popular belief, this song was composed as Rama's description upon seeing Sita for the first time (and not Sita seeing Rama).