Selena Gomez will protect her future children ''like no one's business''.

The 'Heart Wants What It Wants' hitmaker doesn't know if she'll be ''the best or the worst mother'' to her kids but knows she will always protect them.

She told E! News: ''I think I'm gonna either be the best or the worst mother, just because I will protect my children like no one's business.''

Meanwhile, Selena previously revealed she is constantly trying to reinvent herself and feels the need to want to ''grow'' and get stronger all the time.

She shared: ''I'm constantly somebody that likes to grow and feel like, 'All right, what can I be better at, what could I do better at, where could my confidence be stronger?' I'm 25, so I feel like I'm going to change a lot and enjoy that. I worked really hard on my music this year and I'm really excited to put it all together. I like to choose to live my life in a way where I want to be weight-free, and I know that's impossible to do because I have a million [eyes] on me right now. But I think it is important to kind of go through your life the way you want and I like to come at things with my best. That's all I know how to do, just my best.''

The brunette beauty has had a tough year, having to undergo a kidney transplant.

Selena's friend Francia Raisa, who donated her organ, says Selena ''went through a depression'' after having her kidney transplant.

She said: ''[I was told], 'It's going to be hard, the recipient is going to glow and she's going to recover a lot faster than the donor because she's getting something she needs and you are losing something you don't need to lose. It's going to be hard.' And it was very hard. Selena and I both went through a depression.''