>>epor w felln love wither as alex dunnphy, the brainiac middl child on "modern family." >> ha beating me in words with friend how is that possible? >> repor we watched her grow up o screen from an 11-year-old girl to an 18-year-old wom. and jt lt year,hen she was yrs old, she decided to undeo breast reduction surgery goingroro a 32f to a d. why did you decide ultimately to get breast reduction surgery? >> iadted to get areast beuse i was in exccating pa, and i coun't sit up straight. it w always sup uncomfortable me to sleep. it's uncomfortqtle to sit. uncomfortable towalk. i remember baking down in dresng rms becau i couldn't find a batng suit because they had no p that wod fit . just didn'teel right. and i did it for myself. was the best change i ever ma in my life. >> what's been the mos noticeable change post surge for you? >> i think maybe my mood. in genal. i think i'm justhhappier. and i just feel a lot more sere wh hzself. >> reporter: you'reiger evway. tltl >> reporter: you wor a stunning gowno theag awards,, and y notfraidd to s show r ars.s. no, iwasn't. i didn't eve note t

. >> reporter: we fell in love with her as alex dunnphy, >> reporter: we watched her grow up on screen from an 11-year-old girl to an 18-year-old woman. and just last year, when she was 17 years old, she decided to undergo breast reduction surgery going from a 32f to a 32d. get breast reduction surgery? >> i had wanted to get a breast reduction since i developed, because i was in excruciating pain, and i couldn't sit up straight. uncomfortable for me to sleep. it's uncomfortable to sit. uncomfortable to walk. i remember breaking down in dressing rooms because i couldn't find a bathing suit because they had no top that would fit me. i just didn't feel right. and i did it for myself. it was the best change i ever made in my life. >> what's been the most for you? >> i think maybe my mood. in general. i think i'm just much happier. and i just feel a lot more secure with myself. >> reporter: you're lighter in every way. >> exactly. >> reporter: you wore's a stunning gown to the sag awards, and you were not afraid to show your scars. >> no, i wasn't. i didn't even notice them. i didn't think