Teresa Giudice's Daughter: She Gets It From Her Mama

Teresa Giudice gave 15-year-old daughter Gia the full celeb treatment Thursday night -- prepping her for the future ... Gia hopes.

3 weeks after getting out of the pen ... Teresa went to support sister-in-law Melissa Gorga's opening of her Envy boutique in Montclair, NJ.

Gia's an aspiring singer -- who's already released a music video -- and she's clearly learned a thing or two from mom about dressing for success.