Theirs adverisings that claim that their pill increase breast size is that true can some pills increase breast size ?

If it sounds to ....: If it sounds to good to be true it probably isn't. I can think of some hormonal products in birth control pills that cause temporary changes in the breast, but nothing that could give you something your genetics hasn't pre-ordained. Some plant material may also have transient hormone like effect. Best save your money, follow a healthy lifestyle & invest in learning. Benefit in the long term = btr.

No.: There is no fda approved pill for increasing breast size. Some sneaky folks will advertise pills as "supplements" claiming all kinds of things (though usually with a disclaimer that the pill doesn't actually treat any medical problems). Buyer beware. As your mom told you, if it seems too good to be true, it probably is...