The adorable girl from AT&T commercial is Milana Vayntrub. Milana Aleksandrovna Vayntrub who is best known for playing the "Lily Adams" character in a series of AT&T television commercials is an Uzbek American actress, comedian, writer, and producer.
She UCB-trained comedian who’s appeared in College Humor videos and episodes of House of Lies, The League (as “Cute Girl in Bar”), Key and Peele, and ER. (She played Tatiana, a Russian girl with AIDS who Carol tries to adopt.). She is way hotter that you thought.
Lily Adams, the hot girl.
I have a crush on her and I cannot stop looking.
She is enticing, gorgeous and has a great sense of humor. Ain't she?