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About me


Jennifer R. Piper practices in the areas of Family Law, Juvenile Law, and Criminal Litigation. She received her Bachelor's degree in Political Science from the University of Missouri at Columbia and her law degree from St. Louis University in 2001. Prior to attending law school, Ms. Piper worked for the Missouri House of Representatives.


She is a member of the Missouri Bar Association, the St. Louis County Bar Association, and the Illinois Bar Association. She is admitted to practice before the Missouri State Courts, the Illinois State Courts (no longer active), and the Federal District Court for the Eastern District of Missouri. Jennifer was recently named a Rising Star, Up and Coming Lawyer for the State of Missouri by Missouri Lawyers Weekly for 2009 and a Rising Star, Up and Coming Lawyer 2010-2015 by Missouri Super Lawyers. Ms. Piper served as a member of the 2010 and 2011 inaugural class of Barristers in The Theodore McMillian American Inn of Court. As a member and Past President of The St. Louis County Bar Association, Ms. Piper is still actively involved in the organization, and regularly helps organize continuing Legal Education Seminars and events. Ms. Piper has been invited to speak at Continuing Legal Education Seminars of the St. Louis County Bar Association on the topic of electronic evidence. Ms. Piper was appointed and served on a special committee of the Missouri Bar Association dealing with issues involving juvenile cases and immigration. Ms. Piper was appointed by St. Louis County Circuit Court Judge Burton to serve on a special committee to improve the Family Court of St. Louis County, by developing and implementing new local rules and procedures. Ms. Piper serves on the Board of Directors for Caring for Kids, an organization developed and designed to provide essential resources to meet the urgent needs of children in foster care in St. Louis County.


Certified as a Guardian Ad Litem, Ms. Piper is regularly appointed to represent and protect children by Judges and Commissioners in St. Louis County and St. Louis City. Ms. Piper regularly volunteers as a Guardian Ad Litem for the St. Louis County Domestic Violence Court Docket.  Ms. Piper is certified as a Mediator for civil and family law matters. Ms. Piper is a certified Parenting Coordinator and is regularly appointed by the Court to assist families with the most difficult custody matters. Ms. Piper practices in St. Louis County, St. Louis City, Jefferson County, and St. Charles County.




Domestic Law Specialization


Ms. Piper has successfully represented numerous individuals in all areas of domestic law. Many cases have involved dissolutions, paternity actions, child custody disputes, child support disputes, adoption, juvenile law, abuse and neglect, property division, and guardianship proceedings. Ms. Piper has successfully argued in front of the Missouri Appellate Court on several occasions. Most notably, Ms. Piper argued in the reported case ofBrown v. Shannahan, 141 S.W.3d 77 (Mo.App. E.D. 2004). In Brown, the Court agreed with Ms. Piper and established the following new holding: that the statute governing relocations of parents and minor children did not apply to cases where the court was making an initial determination of paternity and custody.



Practice areas


  1. Child Support: 30%
  2. Child Custody: 30%
  3. Family: 30%
  4. Criminal Defense: 5%
  5. Estate Planning: 5%


Payment types:

Cash, Check, Credit card

Attorney endorsements

15 total 

Are you an attorney? Endorse this lawyer

  • Ryan Lee Munro

    I endorse this lawyer.


    Ryan Munro Divorce and separation Attorney
    Relationship: Opposing Counsel on matter

  • Ross W. Buehler

    Jennifer is an excellent attorney. She is very knowledgeable and a conscientious and skilled advocate for her client.


    Ross Buehler Criminal defense Attorney
    Relationship: Fellow lawyer in community

Contact info

Reinker, Hamilton & Piper LLC

2016 S. Big Bend Boulevard
St. Louis, MO, 63117-2404


MOGood Standing, Active200101/08/2013
ILAdministrative - Not Authorized to Practice200205/11/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Named to Best Law Firms, Family Law, St. LouisUS News & World Reports Best Law Firms2016
Rising StarMissouri Super Lawyers2015
Rising StarMissouri Super Lawyers2014
AV RatedMartindale-Hubbell2014
Rising StarMissouri Super Lawyers2013
Rising StarMissouri Super Lawyers2011
Rising StarMissouri Super Lawyers2010
Up and Coming LawyerMissouri Lawyers Weekly2009
Work experience
TitleCompany nameDuration
Attorney at LawReinker, Hamilton & Piper LLC2013 - Present
Attorney at LawKruse, Reinker, & Hamilton LLC1999 - Present
Association namePosition nameDuration
Missouri BarMemberN/A
Illinois State Bar AssociationMemberN/A
St. Louis County Bar AssociationPresidentN/A
Legal cases
Case nameOutcome
Brown v. Shannahan, 141 S.W.3d 77 (Mo.App. E.D. 2004)Appeal won; new holding established
See all legal cases 
School nameMajorDegreeGraduated
Saint Louis University School of LawLawJD - Juris Doctor2001
University of Missouri, ColumbiaPolitical ScienceBA - Bachelor of Arts1998
Speaking engagements
Conference nameTitleDate
Divorce Over 50Divorce over 502014
Veterans Benefits In DivorceVeterans Benefits in Divorce2013
Finding and Preserving Electronic EvidenceElectronic Evidence2010