Giving then opening slot on their tours for example.

Taylor Swift- Justin Bieber, Austin Mahone, Hunter Hayes, Nicki Minaj.

Paulina Rubio started the Pitbull duet thing back in 2005. Other gurlz followed.

Janet--Nsync, Usher, Mindless behavior

Gaga - Tamar Braxton...???

TLC- Christina Aguilera and DC

Britney - Madonna

MATM really made Madonna.

kesha

Demi basically opened doors for all the young stars to get in the seats this year.

Robin Thicke, Chris Brown, Sean Kingston, Flo Rida

Lady Gaga

Britney helped nicki minaj

Britney - Any pop girl that came out around the same time, because she made solo pop artists 'cool' again. So, Christina, Pink, Avril, Hilary etc.... And then has paved the way for today's generation, eg... Selena, Miley.

Taylor - Helped anyone in Country music become popular (again), due to her immense popularity and global domination.

Carrie - Helped make country be considered good again. Therefore helping out people like Tim McGraw, and Brad Paisley (especially with Remind Me)

If this logic was accurate then the Pussycat Dolls would be responsible for Gaga's success

Christina - lady gaga???

Selena Gomez - Carly Rae Jepsen