diff --git a/code/__DEFINES/~skyrat_defines/lewd_defines.dm b/code/__DEFINES/~skyrat_defines/lewd_defines.dm
index 7674131b090..0a889a8889b 100644
--- a/code/__DEFINES/~skyrat_defines/lewd_defines.dm
+++ b/code/__DEFINES/~skyrat_defines/lewd_defines.dm
@@ -30,3 +30,11 @@
 #define BREAST_SIZE_O "O"
 #define BREAST_SIZE_P "P"
 #define BREAST_SIZE_BEYOND_MEASUREMENT "beyond measurement"
+
+//ERP Size Areas
+#define SIZE_WHITELISTED_AREAS list(\
+		/area/centcom/interlink/dorm_rooms,\
+		/area/centcom/holding/cafe/dorms,\
+		/area/misc/hilbertshotel,\
+		/area/station/commons/dorms,\
+		)
diff --git a/code/modules/reagents/chemistry/reagents/other_reagents.dm b/code/modules/reagents/chemistry/reagents/other_reagents.dm
index a065c87a766..9413251617c 100644
--- a/code/modules/reagents/chemistry/reagents/other_reagents.dm
+++ b/code/modules/reagents/chemistry/reagents/other_reagents.dm
@@ -2566,18 +2566,32 @@
 /datum/reagent/growthserum/on_mob_life(mob/living/carbon/affected_mob, seconds_per_tick, times_fired)
 	. = ..()
 	var/newsize = current_size
-	switch(volume)
-		if(0 to 19)
-			newsize = 1.25*RESIZE_DEFAULT_SIZE
-		if(20 to 49)
-			newsize = 1.5*RESIZE_DEFAULT_SIZE
-		if(50 to 99)
-			newsize = 2*RESIZE_DEFAULT_SIZE
-		if(100 to 199)
-			newsize = 2.5*RESIZE_DEFAULT_SIZE
-		if(200 to INFINITY)
-			newsize = 3.5*RESIZE_DEFAULT_SIZE
-
+	//BUBBER EDIT ADDITION START - CAPPING GROWTH SERUM
+	var/valid_area = is_type_in_list(get_area(affected_mob), SIZE_WHITELISTED_AREAS)
+	if(valid_area)
+		switch(volume)
+			if(0 to 19)
+				newsize = 1.25*RESIZE_DEFAULT_SIZE
+			if(20 to 49)
+				newsize = 1.5*RESIZE_DEFAULT_SIZE
+			if(50 to 99)
+				newsize = 2*RESIZE_DEFAULT_SIZE
+			if(100 to 199)
+				newsize = 2.5*RESIZE_DEFAULT_SIZE
+			if(200 to INFINITY)
+				newsize = 3.5*RESIZE_DEFAULT_SIZE
+	else
+		if(affected_mob.has_quirk(/datum/quirk/oversized))
+			newsize = RESIZE_DEFAULT_SIZE
+		else
+			switch(volume)
+				if(0 to 19)
+					newsize = 1.25*RESIZE_DEFAULT_SIZE
+				if(20 to 49)
+					newsize = 1.5*RESIZE_DEFAULT_SIZE
+				if(50 to INFINITY)
+					newsize = 2*RESIZE_DEFAULT_SIZE
+	//BUBBER EDIT ADDITION END - CAPPING GROWTH SERUM
 	affected_mob.update_transform(newsize/current_size)
 	current_size = newsize
 
diff --git a/modular_skyrat/modules/modular_items/lewd_items/code/lewd_items/size_items.dm b/modular_skyrat/modules/modular_items/lewd_items/code/lewd_items/size_items.dm
index d50cf6342ff..df8587c405b 100644
--- a/modular_skyrat/modules/modular_items/lewd_items/code/lewd_items/size_items.dm
+++ b/modular_skyrat/modules/modular_items/lewd_items/code/lewd_items/size_items.dm
@@ -1,10 +1,3 @@
-/// What areas are we allowed to use size items in?
-#define SIZE_WHITELISTED_AREAS list(\
-		/area/centcom/interlink/dorm_rooms,\
-		/area/centcom/holding/cafe/dorms,\
-		/area/misc/hilbertshotel,\
-)
-
 /obj/item/clothing/neck/size_collar
 	name = "size collar"
 	desc = "A shiny black collar embeded with technology that allows the user to change their own size."
@@ -133,5 +126,3 @@
 	UnregisterSignal(parent, COMSIG_ENTER_AREA)
 
 	return ..()
-
-#undef SIZE_WHITELISTED_AREAS